Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...
Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More
Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...
Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More
Big Creek Hydroelectric System, Powerhouse 8, Operator Cottage, Big Cr...
Significance: Building 105, Powerhouse 8, is one of the few surviving examples of operator housing from the Big Creek System period of significance (1911-1929). Its significance derives from its contribution t... More
Big Creek Hydroelectric System, Powerhouse 8, Operator Cottage, Big Cr...
Significance: Building 105, Powerhouse 8, is one of the few surviving examples of operator housing from the Big Creek System period of significance (1911-1929). Its significance derives from its contribution t... More
Big Creek Hydroelectric System, Powerhouse 8, Operator Cottage, Big Cr...
Significance: Building 105, Powerhouse 8, is one of the few surviving examples of operator housing from the Big Creek System period of significance (1911-1929). Its significance derives from its contribution t... More
Columbia Basin Project, Grand Coulee Dam & Franklin D. Roosevelt Lake,...
The Columbia Basin Project is located in 5 counties: Ferry, Grant, Lincoln, Okanogan, and Stevens Significance: At the time of construction, Grand Coulee Dam was the most massive structure ever built: construct... More
Columbia Basin Project, Grand Coulee Dam & Franklin D. Roosevelt Lake,...
The Columbia Basin Project is located in 5 counties: Ferry, Grant, Lincoln, Okanogan, and Stevens Significance: At the time of construction, Grand Coulee Dam was the most massive structure ever built: construct... More
Hoover Dam, Circuits 1-15, U.S. Highway 93, Boulder City, Clark County...
Significance: Transformer Circuits are integral elements of the Hoover Dam electrical generation and transmission system. The circuits contributed to the importance of Hoover Dam power in the WWII and post-war ... More
Hoover Dam, Circuits 1-15, U.S. Highway 93, Boulder City, Clark County...
Significance: Transformer Circuits are integral elements of the Hoover Dam electrical generation and transmission system. The circuits contributed to the importance of Hoover Dam power in the WWII and post-war ... More
Hoover Dam, Circuits 1-15, U.S. Highway 93, Boulder City, Clark County...
Significance: Transformer Circuits are integral elements of the Hoover Dam electrical generation and transmission system. The circuits contributed to the importance of Hoover Dam power in the WWII and post-war ... More
Abbeville Hydroelectric Power Plant, State Highway 284 & County Road 7...
Significance: J. Roy Pennell acquired property and began construction of the multiple arch reinforced concrete dam in 1933. Pennell abandoned the project in 1935 and it was completed by the City of Abbeville w... More
Abbeville Hydroelectric Power Plant, State Highway 284 & County Road 7...
Significance: J. Roy Pennell acquired property and began construction of the multiple arch reinforced concrete dam in 1933. Pennell abandoned the project in 1935 and it was completed by the City of Abbeville w... More
Abbeville Hydroelectric Power Plant, State Highway 284 & County Road 7...
Significance: J. Roy Pennell acquired property and began construction of the multiple arch reinforced concrete dam in 1933. Pennell abandoned the project in 1935 and it was completed by the City of Abbeville w... More
Charlestown Navy Yard, Central Power Plant, Attached to northeast end ...
The Boston Redevelopment Authority hired William A. Owens to document all buildings in the Charlestown Navy Yard in 1977, most of which were exterior photographs. Significance: Building 108 was originally buil... More
Charlestown Navy Yard, Central Power Plant, Attached to northeast end ...
The Boston Redevelopment Authority hired William A. Owens to document all buildings in the Charlestown Navy Yard in 1977, most of which were exterior photographs. Significance: Building 108 was originally buil... More
Stanely R. Mickelsen Safeguard Complex, Missile Site Radar Power Plant...
Survey number: HAER ND-9-AU Public domain photograph of train tracks, railroad works, free to use, no copyright restrictions image - Picryl description
Rush Creek Hydroelectric System, Clubhouse Cottage, Rush Creek, June L...
Significance: Building 108 is one of the earliest Rush Creek worker cottages. Designed by the Riverside, California architect, W.C. Tanner, it combines Craftsman Bungalow and English Cottage styles. The Rush ... More
Rush Creek Hydroelectric System, Clubhouse Cottage, Rush Creek, June L...
Significance: Building 108 is one of the earliest Rush Creek worker cottages. Designed by the Riverside, California architect, W.C. Tanner, it combines Craftsman Bungalow and English Cottage styles. The Rush ... More
Stanley R. Mickelsen Safeguard Complex, Cooling Tower, In Limited Acce...
Significance: The tower provided cooling water to the Perimeter Acquisition Radar Power Plant during normal surveillance operations. Survey number: HAER ND-9-S Building/structure dates: 1972 Initial Construction
Bureau of Mines Boulder City Experimental Station, Date Street north o...
Public domain photograph - historical image of Nevada, United States, free to use, no copyright restrictions image - Picryl description
Pennsylvania-New Jersey Interconnection Bushkill to Roseland Transmiss...
Significance: The creation of the 210-mile-long transmission line known as the Pennsylvania-New Jersey Interconnection (PNJ) was a significant step in the extension of efficient and reliable electrical supply t... More
Commonwealth Edison Company, Crawford Electrical Generating Station, 3...
Significance: The buildings of the Crawford Electric Generating Station were designed by the renowned architectural firm of Graham, Anderson, Probst and White; the Crawford Station also reflects the rapid expan... More
Columbia Canal & Power Plant, Waterfront of Broad River, Columbia, Ric...
Significance: Designed to enable the navigation of the Broad and Congaree Rivers at their confluence in Columbia, the canal was completed in 1824 and enlarged in 1891; the 1891 portion of the canal is the signi... More
Columbia Canal & Power Plant, Waterfront of Broad River, Columbia, Ric...
Significance: Designed to enable the navigation of the Broad and Congaree Rivers at their confluence in Columbia, the canal was completed in 1824 and enlarged in 1891; the 1891 portion of the canal is the signi... More
Columbia Canal & Power Plant, Waterfront of Broad River, Columbia, Ric...
Significance: Designed to enable the navigation of the Broad and Congaree Rivers at their confluence in Columbia, the canal was completed in 1824 and enlarged in 1891; the 1891 portion of the canal is the signi... More
Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission L...
Significance: The transmission line played an integral role in the growth of Montana's electrical and mining industries in the first half of the twentieth century. Its construction enabled the transmission of h... More
Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission L...
Significance: The transmission line played an integral role in the growth of Montana's electrical and mining industries in the first half of the twentieth century. Its construction enabled the transmission of h... More
Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission L...
Significance: The transmission line played an integral role in the growth of Montana's electrical and mining industries in the first half of the twentieth century. Its construction enabled the transmission of h... More
Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission L...
Significance: The transmission line played an integral role in the growth of Montana's electrical and mining industries in the first half of the twentieth century. Its construction enabled the transmission of h... More
Central Power Station, Puget Sound Naval Shipyard, Bremerton, Kitsap C...
Significance: The Central Power Station at Puget Sound Naval Shipyard was constructed in 1910 as the Shipyard's first Central Steam/Power Station. It was the principal power plant for the buildings and equipme... More
Central Power Station, Puget Sound Naval Shipyard, Bremerton, Kitsap C...
Significance: The Central Power Station at Puget Sound Naval Shipyard was constructed in 1910 as the Shipyard's first Central Steam/Power Station. It was the principal power plant for the buildings and equipme... More
Central Power Station, Puget Sound Naval Shipyard, Bremerton, Kitsap C...
Significance: The Central Power Station at Puget Sound Naval Shipyard was constructed in 1910 as the Shipyard's first Central Steam/Power Station. It was the principal power plant for the buildings and equipme... More
Washington Terminal Company Power Plant, First Avenue Northeast, Washi...
Significance: This steam power plant was torn down to make way for the Washington "Metro" subway system. It was originally constructed to provide heat and electric power for Union Station, and compressed air f... More
Washington Terminal Company Power Plant, First Avenue Northeast, Washi...
Significance: This steam power plant was torn down to make way for the Washington "Metro" subway system. It was originally constructed to provide heat and electric power for Union Station, and compressed air f... More
Ellsworth Air Force Base, Rushmore Air Force Station, Steam Plant Buil...
This structure was demolished in 1996. Significance: The Rushmore Air Force Station Steam Plant Building is significant for its association with American Military policy during the Cold War years of the early 1... More
Montana-Dakota Utilities Building, 2603 2nd Avenue North, Billings, Ye...
STORED ON SITE. mchr Significance: It is significant for the supportive role the growing power company played in the development of Billings and for the strong clarity of architectural expression typical of the... More
Hoover Dam, Henderson-Mead Transmission Line 2, Spanning Colorado Rive...
STORED OFF SITE AND ON SITE. mchr Significance: Previously known as a segment of the Davis-Hoover and the Hoover-Mead Transmission Lines, the documented segment of the Henderson-Mead Transmission Line 2 was con... More
Big Creek Hydroelectric System, Big Creek Town, Operator House, Orchar...
Significance: Operator house (building 105) was one of four operator houses built in Cascada (later Big Creek) adjacent to Powerhouse No. 1 in 1912-1913. These were the first permanent operator houses in the B... More
Big Creek Hydroelectric System, Big Creek Town, Operator House, Orchar...
Significance: Operator house (building 105) was one of four operator houses built in Cascada (later Big Creek) adjacent to Powerhouse No. 1 in 1912-1913. These were the first permanent operator houses in the B... More
Big Creek Hydroelectric System, Big Creek Town, Operator House, Orchar...
Significance: Operator house (building 105) was one of four operator houses built in Cascada (later Big Creek) adjacent to Powerhouse No. 1 in 1912-1913. These were the first permanent operator houses in the B... More
Big Creek Hydroelectric System, Big Creek Town, Operator House, Orchar...
Significance: Operator house (building 105) was one of four operator houses built in Cascada (later Big Creek) adjacent to Powerhouse No. 1 in 1912-1913. These were the first permanent operator houses in the B... More
Naval Air Station Fallon, Power Plant, 800 Complex, off Carson Road ne...
Public domain scan of architectural drawing, architecture, free to use, no copyright restrictions image - Picryl description
Snoqualmie Falls Hydroelectric Project, .5 mile north of Snoqualmie, S...
Significance: The Snoqualmie Falls Hydroelectric Project was completed in 1898 and includes a cavity generating station, constructed some 250 feet below the surface of the river and about 300 feet from the edge... More
Fitzsimons General Hospital, Power House, Northwest Corner of East Har...
Survey number: HABS CO-172-AR Public domain photograph of Colorado railroad, train track, free to use, no copyright restrictions image - Picryl description
Fitzsimons General Hospital, Power House, Northwest Corner of East Har...
Survey number: HABS CO-172-AR Public domain photograph - historical image of Colorado, United States, free to use, no copyright restrictions image - Picryl description
Ames Hydroelectric Plant, Ames, San Miguel County, CO
Significance: In 1890-91 L.L. Nunn built the world's first single-phase AC power transmission system at Ames in order to power the nearby Gold King Mine's stamp mill. The plant operated under a head of 320 feet... More
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Public domain image of personnel, army, group of people in uniform, parade, historic place, military activity, free to use, no copyright restrictions - Picryl description
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Public domain photograph of California industry, no copyright restrictions image - Picryl description
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Picryl description: Public domain image of a rural landscape with a watermill, water, decayed building, 18th, 19th century architecture, free to use, no copyright restrictions.
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Picryl description: Public domain image of an industrial building interior, power generator, furnace, boiler, 20th-century architecture, free to use, no copyright restrictions.
Bay City Traction & Electric Company, Power Station, 301 Washington St...
Significance: the Bay City Traction and Electric Power Company Power Station was constructed as a steam generating plant providing power for interurban electric traction transportation in Bay City. This buildin... More
Bay City Traction & Electric Company, Power Station, 301 Washington St...
Significance: the Bay City Traction and Electric Power Company Power Station was constructed as a steam generating plant providing power for interurban electric traction transportation in Bay City. This buildin... More
Hoover Dam, Arizona-Nevada Switchyard, U.S. Highway 93, Boulder City, ...
Significance: It is one of six switchyards built between 1935 and 1952 to provide terminals for major transmission lines carrying electricity to markets in California, Nevada, and Arizona. All of these faciliti... More
National Park Seminary, Service Buildings, Between Linden Lane & Beach...
Significance: The service buildings were essential for the operations of the school. Some of them, including the power plant and fire house, still are. Even though the buildings were utilitarian in function, ... More
National Park Seminary, Service Buildings, Between Linden Lane & Beach...
Significance: The service buildings were essential for the operations of the school. Some of them, including the power plant and fire house, still are. Even though the buildings were utilitarian in function, ... More
American Falls Water, Power & Light Company, Island Power Plant, Snake...
Significance: This site represents technology associated with the first era of long distance electric power transmission in the state. It is also a representative example of an early low-head hydroelectric pow... More
American Falls Water, Power & Light Company, Island Power Plant, Snake...
Significance: This site represents technology associated with the first era of long distance electric power transmission in the state. It is also a representative example of an early low-head hydroelectric pow... More
Hoover Dam, Los Angeles Relay Control Building, U.S. Highway 93, Bould...
Significance: It was a critical element of the Hoover Dam electrical generation and transmission system. Although it was associated by name with the Los Angeles Bureau of Power and Light 387.5/275 switchyard, t... More
Ricks Estate, Electric Power Generating Mill (Ruin), Stone Bridge Road...
See also Ricks Estate, Stone Bridge, HABS No. AR-34-B; & Ricks Estate, Boathouse, HABS No. AR-34-C. For Hot Springs Bathhouses, see HABS Nos. AR-28 through AR-28-I, & the Pythian Bathhouse, HABS No. AR-29. Sur... More
Croton Hydroelectric Plant, Spillway, Croton Dam Road at Muskegon Rive...
Significance: The Croton Hydroelectric Plant spillway was a key design feature of this electrical generation complex, an important example of the work of William G. Fargo, a Jackson, Michigan civil engineer who... More
Grand Canyon Power Plant, Coconino, Coconino County, AZ
Survey number: HAER AZ-2 National Register of Historic Places NRIS Number: 87001411
Allen Park Veterans Administration Hospital, Building No. 10, Southfie...
Significance: Building 10, the Boiler House, was the first structure completed at the Allen Park Veterans Administration Hospital in 1938. Before the hospital could be opened, the complex first needed power an... More
Hoover Dam, Los Angeles Bureau of Power & Light Lines 1-3, U.S. Highwa...
Significance: The transmission lines included pioneering technology in high-voltage transmission. The lines were crucial elements of the Hoover Dam electrical complex, particularly in the role played by Hoover ... More
Georgia Power Atlanta Division Building, 143 Alabama Street, Atlanta, ...
Significance: This Art Moderne six story Flemish bond brick, marble, and limestone building features a flat roof, rounded corners, and horizontal bands of windows. The building was known as the Atlanta Constit... More
Triangle Building, 1333 Warren Avenue & 1300 Broadway, Columbus, Musco...
Significance: Architecture: The only "flat-iron" building in Columbus, this structure uses the mansard-type tile roof reminiscent of Spanish Architecture. A modern building for the 1920s in Columbus, it uses ca... More
Hoover Dam, Metropolitan Water District Switchyard, U.S. Highway 93, B...
Significance: It was the second-largest Federal switchyard at Hoover Dam, the switchyard provided needed power for expansion of irrigation and municipal water supplies in California during and after WWII, but i... More
Hoover Dam, Metropolitan Water District Switchyard, U.S. Highway 93, B...
Significance: It was the second-largest Federal switchyard at Hoover Dam, the switchyard provided needed power for expansion of irrigation and municipal water supplies in California during and after WWII, but i... More
Hauser Hydroelectric Facility, Powerhouse, East Bank of Missouri River...
Significance: The Hauser Hydroelectric Facility Historic District is significant for its association with the industrial development of Montana in the early twentieth century and the consolidation of most of th... More
Croton Hydroelectric Plant, Powerhouse, Croton Dam Road at Muskegon Ri...
Significance: The Croton Hydroelectric Plant powerhouse was designed by William G. Fargo, a Jackson, Michigan, civil engineer who specialized in the design of small and mid-sized hydroelectric plants in the Mid... More
Croton Hydroelectric Plant, Powerhouse, Croton Dam Road at Muskegon Ri...
Significance: The Croton Hydroelectric Plant powerhouse was designed by William G. Fargo, a Jackson, Michigan, civil engineer who specialized in the design of small and mid-sized hydroelectric plants in the Mid... More
Rush Creek Hydroelectric System, Worker Cottage, Rush Creek, June Lake...
Significance: Building 104 is one of the earliest Rush Creek worker cottages. Designed by the Riverside, California architect, W.C. Tanner, it combines Craftsman Bungalow and English Cottage styles. The Rush ... More
Snoqualmie Falls Hydroelectric Project, Plant Two Powerhouse, .5 mile ...
Significance: Construction of the Snoqualmie Falls Hydroelectric Project began in 1898 near the falls of the falls of the Snoqualmie River. It was the first power plant successfully constructed completely under... More
Wilkinson Mill, Roosevelt Avenue, Pawtucket, Providence County, RI
Significance: Representative example of an early 19th century mill, the Wilkinson Mill was one of the first mills in the United States to be steam powered. It is also one of the first mills in the country to p... More
Stanley R. Mickelsen Safeguard Complex, Perimeter Acquisition Radar Po...
Significance: The Perimeter Acquisition Radar Power Plant (PARPP) houses the power generator equipment, transformers, controls, and switch gear and provides electrical energy and other utilities to the PARB. S... More
Stanley R. Mickelsen Safeguard Complex, Perimeter Acquisition Radar Po...
Significance: The Perimeter Acquisition Radar Power Plant (PARPP) houses the power generator equipment, transformers, controls, and switch gear and provides electrical energy and other utilities to the PARB. S... More
Hoover Dam, Hoover-Basic Magnesium North & South Lines, U.S. Highway 9...
Significance: The transmission lines served a vital function during WWII by providing electricity generated at Hoover Dam to the Basic Magnesium plant to the south of Las Vegas. After the war, these transmissio... More
Strawberry Valley Project, Payson, Utah County, UT
Significance: As the first project built by the U.S. Reclamation Service in Utah, the Strawberry Valley Project had a major impact on the State. It represents the beginning of Federal assistance in water devel... More
Strawberry Valley Project, Payson, Utah County, UT
Significance: As the first project built by the U.S. Reclamation Service in Utah, the Strawberry Valley Project had a major impact on the State. It represents the beginning of Federal assistance in water devel... More
Strawberry Valley Project, Payson, Utah County, UT
Significance: As the first project built by the U.S. Reclamation Service in Utah, the Strawberry Valley Project had a major impact on the State. It represents the beginning of Federal assistance in water devel... More
Hoover Dam, Southern California Edison 230-KV Switchyard, U.S. Highway...
Significance: It was an integral element of the Hoover Dam electrical generation and transmission system. This switchyard provided much-needed electricity during WWII to power Douglas, Vultee, and Northrup airc... More
Hoover Dam, Southern California Edison 230-KV Switchyard, U.S. Highway...
Significance: It was an integral element of the Hoover Dam electrical generation and transmission system. This switchyard provided much-needed electricity during WWII to power Douglas, Vultee, and Northrup airc... More
Hoover Dam, Southern California Edison 230-KV Switchyard, U.S. Highway...
Significance: It was an integral element of the Hoover Dam electrical generation and transmission system. This switchyard provided much-needed electricity during WWII to power Douglas, Vultee, and Northrup airc... More
Tenth Street Bridge, Spanning Missouri River, Great Falls, Cascade Cou...
Picryl description: Public domain image of a bridge, water, historic structure, free to use, no copyright restrictions.
Tenth Street Bridge, Spanning Missouri River, Great Falls, Cascade Cou...
Public domain photograph of construction architecture design, diagram, free to use, no copyright restrictions image - Picryl description
Richmond Hill Plantation, East of Richmond Hill on Ford Neck Road, Ric...
Significance: Henry Ford's personal estate, listed on the National Register of Historic Places. Survey number: HABS GA-2348 Building/structure dates: 1935-1937 Initial Construction Building/structure dates: ... More
Richmond Hill Plantation, East of Richmond Hill on Ford Neck Road, Ric...
Significance: Henry Ford's personal estate, listed on the National Register of Historic Places. Survey number: HABS GA-2348 Building/structure dates: 1935-1937 Initial Construction Building/structure dates: ... More
Roosevelt Power Canal & Diversion Dam, Parallels Salt River, Roosevelt...
Significance: The Roosevelt Power Canal was built as an integral part of the Salt River Project and represents the U. S. Reclamation Service's first involvement in the construction of hydroelectric power facili... More
Roosevelt Power Canal & Diversion Dam, Parallels Salt River, Roosevelt...
Significance: The Roosevelt Power Canal was built as an integral part of the Salt River Project and represents the U. S. Reclamation Service's first involvement in the construction of hydroelectric power facili... More
Roosevelt Power Canal & Diversion Dam, Parallels Salt River, Roosevelt...
Significance: The Roosevelt Power Canal was built as an integral part of the Salt River Project and represents the U. S. Reclamation Service's first involvement in the construction of hydroelectric power facili... More
Roosevelt Power Canal & Diversion Dam, Parallels Salt River, Roosevelt...
Significance: The Roosevelt Power Canal was built as an integral part of the Salt River Project and represents the U. S. Reclamation Service's first involvement in the construction of hydroelectric power facili... More
Roosevelt Power Canal & Diversion Dam, Parallels Salt River, Roosevelt...
Significance: The Roosevelt Power Canal was built as an integral part of the Salt River Project and represents the U. S. Reclamation Service's first involvement in the construction of hydroelectric power facili... More
Roosevelt Power Canal & Diversion Dam, Parallels Salt River, Roosevelt...
Significance: The Roosevelt Power Canal was built as an integral part of the Salt River Project and represents the U. S. Reclamation Service's first involvement in the construction of hydroelectric power facili... More
Barnes Estate, Generator House, South side U.S. Route 40 between Fairc...
Written data includes a floor plan. Significance: Is a contributing resource of the Barnes Estate, an early 20th century property. Survey number: HABS PA-5499-A Building/structure dates: after. 1920- before. ... More
Columbia Basin Project, Grand Coulee, Grant County, WA
The Columbia Basin Project is located in 5 counties: Ferry, Grant, Lincoln, Okanogan, and Stevens Survey number: HAER WA-139
Rush Creek Hydroelectric System, Worker Cottage, Rush Creek, June Lake...
Significance: Building 103 is one of the earliest Rush Creek worker cottages. Designed by the Riverside, California architect, W.C. Tanner, it combines Craftsman Bungalow and English Cottage styles. The Rush ... More
Rush Creek Hydroelectric System, Worker Cottage, Rush Creek, June Lake...
Significance: Building 103 is one of the earliest Rush Creek worker cottages. Designed by the Riverside, California architect, W.C. Tanner, it combines Craftsman Bungalow and English Cottage styles. The Rush ... More
Victoria Dam, West branch of Ontonagon River, 4.5 miles southwest of R...
Significance: The reinforced-concrete, multiple-arch buttressed dam was never a very common type in the United States, and it was particularly uncommon in the eastern half of the country. Very few dams of this ... More
Victoria Dam, West branch of Ontonagon River, 4.5 miles southwest of R...
Significance: The reinforced-concrete, multiple-arch buttressed dam was never a very common type in the United States, and it was particularly uncommon in the eastern half of the country. Very few dams of this ... More
Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricop...
Significance: It was the second dam constructed under the Salt River Project's hydroelectric expansion program in the 1920s. Survey number: HAER AZ-15 Building/structure dates: 1927 Initial Construction Nati... More
Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricop...
Significance: It was the second dam constructed under the Salt River Project's hydroelectric expansion program in the 1920s. Survey number: HAER AZ-15 Building/structure dates: 1927 Initial Construction Nati... More