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Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Quality in the manufacture of steel requires constant control and research. This chemist is weighing the elements of a steel alloy to determine its exact composition. Analysis is determined to 1/1000 of 1 percent of each element in the alloy

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

Posters in use. Office of Emergency Management (OEM) production posters displayed on the pay shack of the Allegheny Ludlum Steel Corporation in Brackenridge, Pennsylvania

Posters in use. Office of Emergency Management (OEM) production poster...

Public domain image of personnel, army, group of people in uniform, parade, historic place, military activity, free to use, no copyright restrictions - Picryl description

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Open hearth steel is also made at this plant. Raw materials are charged into an open hearth furnace by means of this charging mechanism. The open hearth furnaces have a capacity of about 100 tons of steel per heat

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Public domain photograph of 1930s-1940s train station, train car, no copyright restrictions image - Picryl description

West Penn Bridge, Pennsylvania Railroad, spanning Allegheny River, Pittsburgh, Allegheny County, PA

West Penn Bridge, Pennsylvania Railroad, spanning Allegheny River, Pit...

Significance: Built to provide railroad access to Washington's Landing, the bridge has become a signature bridge in Pittsburgh. The elegant double intersection Pratt truss frames a dramatic view of Pittsburgh a... More

Monongahela Incline Plane, Connecting North side of Grandview Avenue at Wyoming Street with West Carson Street near Smithfield Street, Pittsburgh, Allegheny County, PA

Monongahela Incline Plane, Connecting North side of Grandview Avenue a...

Significance: The first constructed and oldest passenger incline plane in Pittsburgh, this system retains the 1882 safety brake and bull wheel and 1935 electrical system including drive motors, operating brakes... More

Monongahela Incline Plane, Connecting North side of Grandview Avenue at Wyoming Street with West Carson Street near Smithfield Street, Pittsburgh, Allegheny County, PA

Monongahela Incline Plane, Connecting North side of Grandview Avenue a...

Significance: The first constructed and oldest passenger incline plane in Pittsburgh, this system retains the 1882 safety brake and bull wheel and 1935 electrical system including drive motors, operating brakes... More

14-16 Eloise Street (House), Pittsburgh, Allegheny County, PA

14-16 Eloise Street (House), Pittsburgh, Allegheny County, PA

Written data includes photocopies of location maps & floor plans. Significance: 14-16 Eloise Street is representative of the brick row housing and duplexes that were built in this section of Allegheny after a d... More

Morse School Annex, Sarah Street between Twenty-fourth & Twenty-fifth Streets, Pittsburgh, Allegheny County, PA

Morse School Annex, Sarah Street between Twenty-fourth & Twenty-fifth ...

Written data includes sketches & photocopies of maps. Significance: The structure is a strange mixture of relatively new and daring structural concepts and a hopelessly outdated exterior shell. It is a "mule" w... More

Morse School Annex, Sarah Street between Twenty-fourth & Twenty-fifth Streets, Pittsburgh, Allegheny County, PA

Morse School Annex, Sarah Street between Twenty-fourth & Twenty-fifth ...

Written data includes sketches & photocopies of maps. Significance: The structure is a strange mixture of relatively new and daring structural concepts and a hopelessly outdated exterior shell. It is a "mule" w... More

John J. Muse House, Muse's Lane, McKeesport, Allegheny County, PA

John J. Muse House, Muse's Lane, McKeesport, Allegheny County, PA

Public domain scan of an architecture diagram, architectural drawing, building plan, or design, free to use, no copyright restrictions - Picryl description.

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela...

Survey number: HAER PA-380-E Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela...

Survey number: HAER PA-380-E Public domain photograph of industrial building, landscape, architecture, free to use, no copyright restrictions image - Picryl description

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela...

Survey number: HAER PA-380-E Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Allegheny Arsenal, N. C. O. Quarters, Thirty-ninth Street, Pittsburgh, Allegheny County, PA

U.S. Allegheny Arsenal, N. C. O. Quarters, Thirty-ninth Street, Pittsb...

Unprocessed Field note material exists for this structure: FN-9, FN-11 Survey number: HABS PA-8-1-D

Virginia Medical Center, Aspinwall Division, Administration Building, 5103 Delafield Avenue, Aspinwall, Allegheny County, PA

Virginia Medical Center, Aspinwall Division, Administration Building, ...

Significance: The Administration Building is associated with the continued growth and expansion of the veteran's hospital at Aspinwall. Constructed in 1938, the building housed the facility's administrative off... More

Broadhead Manor, Northern corner of Broadhead Fording & Mazette Roads, Pittsburgh, Allegheny County, PA

Broadhead Manor, Northern corner of Broadhead Fording & Mazette Roads,...

Significance: Broadhead Manor, first occupied in February 1944, is among Pittsburgh's earliest public housing projects. At the beginning of World War II, the tremendous demand for shipbuilding resulted in a 6,0... More

Henry S. Linn House, North Allegheny Street, Bellefonte, Centre County, PA

Henry S. Linn House, North Allegheny Street, Bellefonte, Centre County...

Unprocessed Field note material exists for this structure: FN-14 Survey number: HABS PA-8-5 Building/structure dates: 1810 Initial Construction Building/structure dates: 1841 Subsequent Work Building/struct... More

Allequippa Terrace, Wadsworth Hall, Burrows & Wadsworth Streets, Pittsburgh, Allegheny County, PA

Allequippa Terrace, Wadsworth Hall, Burrows & Wadsworth Streets, Pitts...

Survey number: HABS PA-6222-B Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

North Side Market, Federal & East Ohio Streets, Pittsburgh, Allegheny County, PA

North Side Market, Federal & East Ohio Streets, Pittsburgh, Allegheny ...

Public domain scan of an architecture diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.

Gulf Filling Station, Corner of Route 51 & West Liberty Avenue, Pittsburgh, Allegheny County, PA

Gulf Filling Station, Corner of Route 51 & West Liberty Avenue, Pittsb...

Written data includes site & floor plans. Significance: The Gulf Filling Station (Meineke Garage) is a good example of early 20th century transportation-related architecture. This building is an unusual example... More

Schenley Park Bridge over Panther Hollow, Spanning Panther Hollow at Panther Hollow Road, Pittsburgh, Allegheny County, PA

Schenley Park Bridge over Panther Hollow, Spanning Panther Hollow at P...

Significance: The bridge includes design elements from the City Beautiful movement while utilizing Pittsburgh's "native" industry: steel. An elegant three-hinged steel arch, the bridge is a contributing structu... More

Carnegie Institute of Technology, Administration Building, Frew Street, Pittsburgh, Allegheny County, PA

Carnegie Institute of Technology, Administration Building, Frew Street...

Survey number: HABS PA-1172 Building/structure dates: before 1963 Subsequent Work

Carnegie Institute of Technology, Administration Building, Frew Street, Pittsburgh, Allegheny County, PA

Carnegie Institute of Technology, Administration Building, Frew Street...

Survey number: HABS PA-1172 Building/structure dates: before 1963 Subsequent Work

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, Allegheny County, PA

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, Allegheny County, PA

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

John F. Singer House, 1318 Singer Place, Pittsburgh, Allegheny County, PA

John F. Singer House, 1318 Singer Place, Pittsburgh, Allegheny County,...

Significance: One of the finest and most elaborate Pittsburgh mansions built in the Gothic Revival style. Survey number: HABS PA-433 Building/structure dates: ca. 1869 Initial Construction

John F. Singer House, 1318 Singer Place, Pittsburgh, Allegheny County, PA

John F. Singer House, 1318 Singer Place, Pittsburgh, Allegheny County,...

Significance: One of the finest and most elaborate Pittsburgh mansions built in the Gothic Revival style. Survey number: HABS PA-433 Building/structure dates: ca. 1869 Initial Construction

U.S. Steel Homestead Works, Machine Shop No. 2, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Machine Shop No. 2, Along Monongahela Rive...

See also HAER PA-200 for additional documentation. Includes written data (pages 138 through 141). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the ... More

1207 Federal Street (House), Pittsburgh, Allegheny County, PA

1207 Federal Street (House), Pittsburgh, Allegheny County, PA

Written data includes photocopies of location maps & floor plans. Significance: 1207 Federal Street is representative of the commercial buildings that fronted on this section of Federal Street in Allegheny by t... More

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monon...

Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the nation's most important steel mills and the Mon Valley's status as the pre-eminent iron and steel ... More

St. Mary's Roman Catholic School, Northwest corner of Church Avenue & Guthrie Street, McKees Rocks, Allegheny County, PA

St. Mary's Roman Catholic School, Northwest corner of Church Avenue & ...

Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.

St. Mary's Roman Catholic School, Northwest corner of Church Avenue & Guthrie Street, McKees Rocks, Allegheny County, PA

St. Mary's Roman Catholic School, Northwest corner of Church Avenue & ...

Public domain photograph of window, architectural element, free to use, no copyright restrictions image - Picryl description

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State Route 3014), McKees Rocks, Allegheny County, PA

McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...

Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More

Washington Crossing Bridge, Spanning Allegheny River at Fortieth Street (State Route 2124), Pittsburgh, Allegheny County, PA

Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...

See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More

John M. Bracken Hotel, 100-104 Anderson Street, Pittsburgh, Allegheny County, PA

John M. Bracken Hotel, 100-104 Anderson Street, Pittsburgh, Allegheny ...

Written data & photo caption pages include sketches. Significance: The Bracken Hotel, built in 1892, is one of the last remnants in this part of what was once the City of Allegheny, annexed to Pittsburgh in 190... More

John M. Mitchell House, 524 Third Avenue, Pittsburgh, Allegheny County, PA

John M. Mitchell House, 524 Third Avenue, Pittsburgh, Allegheny County...

Unprocessed Field note material exists for this structure: FN-74 Survey number: HABS PA-42 Building/structure dates: after. 1845- before. 1860 Initial Construction

George Westinghouse Bridge, Spanning Turtle Creek at Lincoln Highway (U.S. Route 30), East Pittsburgh, Allegheny County, PA

George Westinghouse Bridge, Spanning Turtle Creek at Lincoln Highway (...

Significance: Hailed as "America's Longest Concrete-Arch Bridge" when it opened in 1932, the bridge's main span remains one of the longest concrete arch spans in the U.S. This structure represents the highest e... More

Munhall Homesteads, Longfellow Drive, Munhall, Allegheny County, PA

Munhall Homesteads, Longfellow Drive, Munhall, Allegheny County, PA

Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

Virginia Medical Center, Aspinwall Division, Ambulatory Quarters, 5103 Delafield Avenue, Aspinwall, Allegheny County, PA

Virginia Medical Center, Aspinwall Division, Ambulatory Quarters, 5103...

Significance: The Ambulant Quarters is one of the original structures erected by the United States Veterans' Bureau at Aspinwall in 1924. The building originally housed ambulatory tuberculosis patients, who wer... More

Jones & Laughlin Steel Corporation, Pittsburgh Works, Morgan Billet Mill Engine, 550 feet north of East Carson Street, opposite South Twenty-seventh Street, Pittsburgh, Allegheny County, PA

Jones & Laughlin Steel Corporation, Pittsburgh Works, Morgan Billet Mi...

Survey number: HAER PA-48 Building/structure dates: 1893 Initial Construction

U.S. Steel Duquesne Works, Primary Mill, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Primary Mill, Along Monongahela River, Duqu...

See also HAER PA-115 for additional documentation. Includes written data (pages 211 through 226). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

James Miller House, Pittsburgh vicinity, Library, Allegheny County, PA

James Miller House, Pittsburgh vicinity, Library, Allegheny County, PA

Unprocessed Field note material exists for this structure: FN-34 Survey number: HABS PA-410 Building/structure dates: ca. 1804- ca. 1808 Initial Construction Building/structure dates: after 1808 Subsequent Work

Pittsburgh & Castle Shannon Railroad, South Hills Junction, Pittsburgh, Allegheny County, PA

Pittsburgh & Castle Shannon Railroad, South Hills Junction, Pittsburgh...

Significance: This former 40-inch, narrow-guage railroad was purchased in 1871 by the Pittsburgh & Castle Shannon Railroad Company. In 1909, Pittsburgh Railways Company, lessee, began electrifying and convertin... More

Fort Pitt Blockhouse, 25 Penn Avenue, Point State Historic Park, Pittsburgh, Allegheny County, PA

Fort Pitt Blockhouse, 25 Penn Avenue, Point State Historic Park, Pitts...

Significance: The structure was erected on the west side of the ramparts of Fort Pitt as greater protection against Indian attacks. It is the only known remaining 18th century building in the Pittsburgh vicinit... More

U.S. Steel Homestead Works, Press Shop No. 2, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Press Shop No. 2, Along Monongahela River,...

See also HAER PA-200 for additional documentation. Includes written data (pages 134 & 135). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the nation... More

U.S. Steel Homestead Works, Press Shop No. 2, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Press Shop No. 2, Along Monongahela River,...

See also HAER PA-200 for additional documentation. Includes written data (pages 134 & 135). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the nation... More

Bessemer & Lake Erie Railroad, Allegheny River Bridge, Spanning Allegheny River, East of Pennsylvania Turnpike (I-76), Oakmont, Allegheny County, PA

Bessemer & Lake Erie Railroad, Allegheny River Bridge, Spanning Allegh...

Significance: The bridge was designed by two U.S. Steel subsidiaries - the railroad and the American Bridge Company - as a showpiece for their parent company. This structure not only introduced new silicon stee... More

Blair Heights, Building No. 8, Maple Avenue, Clairton, Allegheny County, PA

Blair Heights, Building No. 8, Maple Avenue, Clairton, Allegheny Count...

Survey number: HABS PA-6642-B Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

Blair Heights, Building No. 8, Maple Avenue, Clairton, Allegheny County, PA

Blair Heights, Building No. 8, Maple Avenue, Clairton, Allegheny Count...

Survey number: HABS PA-6642-B Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

Penn & Liberty Avenues (Commercial Buildings), Harper Building, 723-725 Liberty Avenue, Pittsburgh, Allegheny County, PA

Penn & Liberty Avenues (Commercial Buildings), Harper Building, 723-72...

Written data includes sketches & photocopies of maps & photographs. Significance: The Harper Building is significant as a tribute to John Arunah Harper, a prominent financier, organizer, and philanthropist in l... More

Hogg-Brunot House, 216 Stockton Avenue, Pittsburgh, Allegheny County, PA

Hogg-Brunot House, 216 Stockton Avenue, Pittsburgh, Allegheny County, ...

Significance: This a fine example of a large Greek Revival Pittsburgh town house of the mid-nineteenth century. The general plan, with the exception of minor interior alterations is unchanged. Survey number: ... More

Allegheny County Pennsylvania Republican Club to Abraham Lincoln, Wednesday, December 12, 1860  (Invitation to visit Pittsburgh)
U.S. Steel Homestead Works, Along Monongahela River, north of Eighth Avenue, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Along Monongahela River, north of Eighth A...

Significance: Established in 1879, Homestead Works is one of six plants (Homestead, Edgar Thomson, Duquesne, Irvin, National and Clairton) which, until the collapse in 1982, comprised U.S. Steel's Mon Valley wo... More

Pittsburgh & Castle Shannon Railroad, Reflectorville Viaduct, Overbrook Trolley Line, crossing near Edgebrook Avenue, Pittsburgh, Allegheny County, PA

Pittsburgh & Castle Shannon Railroad, Reflectorville Viaduct, Overbroo...

Significance: The bridge is one of four bridges which carried Pittsburgh Railway's trolley cars, along the 6 mile route from Mount Washington to Castle Shannon. Survey number: HAER PA-410-C

U.S. Allegheny Arsenal, Commandants' Quarters, Fortieth Street, Pittsburgh, Allegheny County, PA

U.S. Allegheny Arsenal, Commandants' Quarters, Fortieth Street, Pittsb...

Public domain scan of an architecture diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.

1223-1225 Federal Street (House), Pittsburgh, Allegheny County, PA

1223-1225 Federal Street (House), Pittsburgh, Allegheny County, PA

Written data includes photocopies of location maps & floor plans. Significance: 1223-1225 Federal Street is representative of the commercial buildings that fronted on this section of Federal Street in Allegheny... More

English-Oliver House, 845 Ridge Avenue, Pittsburgh, Allegheny County, PA

English-Oliver House, 845 Ridge Avenue, Pittsburgh, Allegheny County, ...

Significance: Originally built in 1871-74, the house was remodeled in 1892-93 after the designs of the Boston firm of Shepley, Rutan, and Coolidge. One of the finest of the Pittsburgh millionaires'' mansions, i... More

Charles Brewer House, 1131 Western Avenue, Pittsburgh, Allegheny County, PA

Charles Brewer House, 1131 Western Avenue, Pittsburgh, Allegheny Count...

Unprocessed Field note material exists for this structure: FN-73 Survey number: HABS PA-41 Building/structure dates: ca. 1830 Initial Construction Building/structure dates: after. 1861- before. 1925 Subsequent Work

Charles Brewer House, 1131 Western Avenue, Pittsburgh, Allegheny County, PA

Charles Brewer House, 1131 Western Avenue, Pittsburgh, Allegheny Count...

Unprocessed Field note material exists for this structure: FN-73 Survey number: HABS PA-41 Building/structure dates: ca. 1830 Initial Construction Building/structure dates: after. 1861- before. 1925 Subsequent Work

Pittsburgh & Steubenville Extension Railroad Tunnel, Between Fifth & Sixth Streets, East of Grant Street, Pittsburgh, Allegheny County, PA

Pittsburgh & Steubenville Extension Railroad Tunnel, Between Fifth & S...

Significance: The Pittsburgh and Steubenville Extension Railroad Tunnel was a section of the Pittsburgh rail link between the Pennsylvania Railroad's western terminus and the eastern terminus of the Steubenvill... More

U.S. Steel Homestead Works, 160" Plate Mill, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, 160" Plate Mill, Along Monongahela River, ...

See also HAER PA-301 for additional documentation. Includes drawings & written data. See also HAER PA-200 for additional documentation. Includes written data (pages 110 through 119). Significance: As a group, t... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile ...

Photographs cover approach spans only; Ohio River span not shown. Significance: After two decades of agitation by the local business community, the West End-North Side Bridge was completed in 1932 by the Americ... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile ...

Photographs cover approach spans only; Ohio River span not shown. Significance: After two decades of agitation by the local business community, the West End-North Side Bridge was completed in 1932 by the Americ... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile ...

Photographs cover approach spans only; Ohio River span not shown. Significance: After two decades of agitation by the local business community, the West End-North Side Bridge was completed in 1932 by the Americ... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile ...

Photographs cover approach spans only; Ohio River span not shown. Significance: After two decades of agitation by the local business community, the West End-North Side Bridge was completed in 1932 by the Americ... More

Smithfield Street Bridge, Spanning Monongahela River on Smithfield Street, Pittsburgh, Allegheny County, PA

Smithfield Street Bridge, Spanning Monongahela River on Smithfield Str...

Significance: Designed by Gustav Lindenthal, one of America's most famous bridge engineers, as a two-lane bridge. One lane was erected in 1883, and another was added in 1891. The span is Pittsburgh's most gra... More

Smithfield Street Bridge, Spanning Monongahela River on Smithfield Street, Pittsburgh, Allegheny County, PA

Smithfield Street Bridge, Spanning Monongahela River on Smithfield Str...

Significance: Designed by Gustav Lindenthal, one of America's most famous bridge engineers, as a two-lane bridge. One lane was erected in 1883, and another was added in 1891. The span is Pittsburgh's most gra... More

U.S. Steel Homestead Works, Press Shop No. 1, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Press Shop No. 1, Along Monongahela River,...

See also HAER PA-200 for additional documentation. Includes written data (pages 131 through 133). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the ... More

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela River, Braddock, Allegheny County, PA

U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...

Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More

John H. Shoenberger House, 425 Penn Avenue, Pittsburgh, Allegheny County, PA

John H. Shoenberger House, 425 Penn Avenue, Pittsburgh, Allegheny Coun...

Unprocessed Field note material exists for this structure: FN-75 Survey number: HABS PA-43 Building/structure dates: ca. 1847 Initial Construction Building/structure dates: after. 1847- before. 1935 Subsequent Work

Shadyside Presbyterian Church, Amberson Avenue & Westminister Place, Pittsburgh, Allegheny County, PA

Shadyside Presbyterian Church, Amberson Avenue & Westminister Place, P...

Significance: The Shadyside Church is a fine example of a late 19th century suburban church designed by the noted Boston architectural firm of Shepley, Ruten, and Coolidge. Supported by a devoted congregation, ... More

Monongahela Connecting Railroad Company, Main Bridge, Spanning Monongahela River at mile post 3.1, Pittsburgh, Allegheny County, PA

Monongahela Connecting Railroad Company, Main Bridge, Spanning Mononga...

Significance: Major connection between the north and south sides of the plant which was separated by the Monongahela River. Practically all of the intra-mill transfer of materials crossed this bridge during th... More

Broadhead Manor, Two-Bedroom Type, 3644 Old Orchard Circle, Pittsburgh, Allegheny County, PA

Broadhead Manor, Two-Bedroom Type, 3644 Old Orchard Circle, Pittsburgh...

Survey number: HABS PA-6221-C Building/structure dates: 1944 Initial Construction

Joseph Coltart House, 3431 Forbes Street, Pittsburgh, Allegheny County, PA

Joseph Coltart House, 3431 Forbes Street, Pittsburgh, Allegheny County...

Unprocessed Field note material exists for this structure: FN-79 Survey number: HABS PA-47 Building/structure dates: ca. 1843 Initial Construction Building/structure dates: after 1843 Subsequent Work

U.S. Steel Duquesne Works, 22-Inch Bar Mill, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, 22-Inch Bar Mill, Along Monongahela River, ...

See also HAER PA-115 for additional documentation. Includes written data (pages 227 through 238). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Heat Treatment Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Heat Treatment Plant, Along Monongahela Riv...

See also HAER PA-115 for additional documentation. Includes written data (pages 182 through 189). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Heat Treatment Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Heat Treatment Plant, Along Monongahela Riv...

See also HAER PA-115 for additional documentation. Includes written data (pages 182 through 189). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Heat Treatment Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Heat Treatment Plant, Along Monongahela Riv...

See also HAER PA-115 for additional documentation. Includes written data (pages 182 through 189). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

Pennsylvania Railroad Station Rotunda, Liberty, Grant & Eleventh Streets, Pittsburgh, Allegheny County, PA

Pennsylvania Railroad Station Rotunda, Liberty, Grant & Eleventh Stree...

Significance: The Pennsylvania Railroad Station was commissioned from the office of D.H. Brunham in Chicago, one of the chief purveyors of the new monumental Classicism. Survey number: HABS PA-1175 Building/... More

Pennsylvania Railroad Station Rotunda, Liberty, Grant & Eleventh Streets, Pittsburgh, Allegheny County, PA

Pennsylvania Railroad Station Rotunda, Liberty, Grant & Eleventh Stree...

Significance: The Pennsylvania Railroad Station was commissioned from the office of D.H. Brunham in Chicago, one of the chief purveyors of the new monumental Classicism. Survey number: HABS PA-1175 Building/... More

U.S. Allegheny Arsenal, Officers' Quarters, Thirty-ninth Street, Pittsburgh, Allegheny County, PA

U.S. Allegheny Arsenal, Officers' Quarters, Thirty-ninth Street, Pitts...

Unprocessed Field note material exists for this structure: FN-9 Survey number: HABS PA-8-1-B

Ohio Connecting Railway, Brunot's Island Bridge, Spanning Ohio River at Brunot's Island, Pittsburgh, Allegheny County, PA

Ohio Connecting Railway, Brunot's Island Bridge, Spanning Ohio River a...

Significance: The bridge is significant for its complexity, carrying rail traffic in four directions across the Ohio River on a system of high viaduct spans and through trusses. Innovative methods were used to ... More

U.S. Allegheny Arsenal, Boiler House, Pittsburgh, Allegheny County, PA

U.S. Allegheny Arsenal, Boiler House, Pittsburgh, Allegheny County, PA

Unprocessed Field note material exists for this structure: FN-9 Survey number: HABS PA-8-1-G

Liberty Bridge, Spanning Monongahela River, East Carson Street & Second Avenue at State Route 3069, Pittsburgh, Allegheny County, PA

Liberty Bridge, Spanning Monongahela River, East Carson Street & Secon...

Significance: This was the longest and most expensive bridge built in Allegheny County when it was completed in 1928. The bridge links Pittsburgh's downtown area with the Liberty Tunnels, built through Mt. Wash... More

Pittsburgh & Lake Erie Railroad, Locomotive Repair Shops, River Road at Chartiers Avenue, McKees Rocks, Allegheny County, PA

Pittsburgh & Lake Erie Railroad, Locomotive Repair Shops, River Road a...

Significance: This complex was built for the maintenance of the Pittsburgh & Lake Erie Railroad's steam and later diesel locomotives in 1903. The surviving structures reflect the industrial architectural herita... More

1200 Reddour Street (House), Pittsburgh, Allegheny County, PA

1200 Reddour Street (House), Pittsburgh, Allegheny County, PA

Written data includes photocopies of location maps & floor plans. Significance: 1200 Reddour Street is representative of the larger-scale, multi-unit residential structures that were constructed in this sectio... More

Garden Theater, 10-12-14 West North Avenue, Pittsburgh, Allegheny County, PA

Garden Theater, 10-12-14 West North Avenue, Pittsburgh, Allegheny Coun...

Significance: As "movies" lost their novelty and became a major entertainment form, picture theatres became more substantial and dignified than the earlier Nickelodeons. The Garden Theatre is a typical little-c... More

U.S. Steel Duquesne Works, Auxiliary Buildings & Shops, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Auxiliary Buildings & Shops, Along Monongah...

Public domain photograph of attic, house frame, free to use, no copyright restrictions image - Picryl description

U.S. Steel Duquesne Works, Electric Furnace Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Electric Furnace Steelmaking Plant, Along M...

Public domain photograph of electric power plant, generation, free to use, no copyright restrictions image - Picryl description

Penn & Liberty Avenues (Commercial Buildings), 600 & 700 blocks Liberty Avenue, 600 block Penn Avenue, Pittsburgh, Allegheny County, PA

Penn & Liberty Avenues (Commercial Buildings), 600 & 700 blocks Libert...

Written data includes photocopies of maps & photographs. Unprocessed Field note material exists for this structure: FN-202 Survey number: HABS PA-5152 Building/structure dates: after. 1875- before. 1925 Initi... More

Pittsburgh & Castle Shannon Railroad, Warrington Avenue Bridge, Overbrook Trolley Line, Crossing Warrington Avenue, Pittsburgh, Allegheny County, PA

Pittsburgh & Castle Shannon Railroad, Warrington Avenue Bridge, Overbr...

Significance: The bridge is one of four bridges which carried Pittsburgh Railway's trolley cars along the 6 mile route from Mount Washington to Castle Shannon. Survey number: HAER PA-410-A

A. S. Rhodes Springhouse, Bull Run Road, Dravosburg, Allegheny County, PA

A. S. Rhodes Springhouse, Bull Run Road, Dravosburg, Allegheny County,...

Unprocessed Field note material exists for this structure: FN-81 Survey number: HABS PA-413 Building/structure dates: after. 1800- before. 1850 Initial Construction

Bedford Dwellings, Management Building, 2304 Bedford Avenue, Pittsburgh, Allegheny County, PA

Bedford Dwellings, Management Building, 2304 Bedford Avenue, Pittsburg...

Survey number: HABS PA-6339-A Building/structure dates: 1940 Initial Construction

Allequippa Terrace, Burrows & Wadsworth Streets & Waring & Robinson Courts, Pittsburgh, Allegheny County, PA

Allequippa Terrace, Burrows & Wadsworth Streets & Waring & Robinson Co...

Public domain photograph of court building, free to use, no copyright restrictions image - Picryl description

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

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