![[Obelisk, wrapped in a protective casing, on its side on rollers, moving along scaffolding from the Circus Nero to its new location at the Piazza of Saint Peter in Rome]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzIwMTkvMDkvMTYvb2JlbGlzay13cmFwcGVkLWluLWEtcHJvdGVjdGl2ZS1jYXNpbmctb24taXRzLXNpZGUtb24tcm9sbGVycy1tb3ZpbmctYWxvbmctMDFlMTkyLTEwMjQuanBn/40/49/webp "[Obelisk, wrapped in a protective casing, on its side on rollers, moving along scaffolding from the Circus Nero to its new location at the Piazza of Saint Peter in Rome]")
[Obelisk, wrapped in a protective casing, on its side on rollers, movi...
Illus. in: Della trasportatione dell'obelisco vaticano et delle fabriche di Nostro Signore papa Sisto v fatte dal cavallier Domenico Fontana. Roma : D. Basa, 1590. Published in: The tradition of technology : L... More
Great Falls/S. U. M. Power Canal System, Paterson, Passaic County, NJ
Significance: Begun by the Society for the Establishment of Useful Manufacturers under the supervision of Pierre L'Enfant, the Canal System was first completed in 1794. Later alterations and improvements were ... More
Great Falls/S. U. M. Power Canal System, Paterson, Passaic County, NJ
Significance: Begun by the Society for the Establishment of Useful Manufacturers under the supervision of Pierre L'Enfant, the Canal System was first completed in 1794. Later alterations and improvements were ... More
Great Falls/S. U. M. Power Canal System, Paterson, Passaic County, NJ
Significance: Begun by the Society for the Establishment of Useful Manufacturers under the supervision of Pierre L'Enfant, the Canal System was first completed in 1794. Later alterations and improvements were ... More
Heber Light & Power Company, Hydroelectric Plant, U.S. Route 40/189, H...
Significance: Heber Light and Power Plant is representative of the large number of modest hydroelectric stations built during the first two decades of the twentieth century as a result of the growing demand for... More
Montezuma Valley Irrigation Company System, Dolores, Montezuma County,...
Significance: Settlement of the Montezuma Valley was made possible in the 1880s with the constructino of the irrigation system. Organized by Cames W. Kanna, the complex series of tunnel (5,400 foot long), "Grea... More
Montezuma Valley Irrigation Company System, Dolores, Montezuma County,...
Significance: Settlement of the Montezuma Valley was made possible in the 1880s with the constructino of the irrigation system. Organized by Cames W. Kanna, the complex series of tunnel (5,400 foot long), "Grea... More
Montezuma Valley Irrigation Company System, Dolores, Montezuma County,...
Significance: Settlement of the Montezuma Valley was made possible in the 1880s with the constructino of the irrigation system. Organized by Cames W. Kanna, the complex series of tunnel (5,400 foot long), "Grea... More
General Dynamics Corporation Shipyard, Outfitting Pier No. 3, 97 East ...
Significance: Constructed in 1942-43, Pier 3 is significant as an integral component of the Quincy-Fore River Shipyard facilities from the World War II period until the closing of the yard in 1984. Fitting out... More
Central Railroad of New Jersey, Engine Terminal, Jersey City, Hudson C...
Public domain photograph of diesel or electric train engine, free to use, no copyright restrictions image - Picryl description
Central Railroad of New Jersey, Engine Terminal, Jersey City, Hudson C...
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Central Railroad of New Jersey, Engine Terminal, Jersey City, Hudson C...
Public domain scan of a technical diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.
San Francisco Fire Department, Pumping Station No. 2, Van Ness Avenue ...
Significance: A well preserved, representative example of an early 20th century Steam powered water pumping station. The site also retains historical significance because of its associations with the city's fi... More
San Francisco Fire Department, Pumping Station No. 2, Van Ness Avenue ...
Significance: A well preserved, representative example of an early 20th century Steam powered water pumping station. The site also retains historical significance because of its associations with the city's fi... More
San Francisco Fire Department, Pumping Station No. 2, Van Ness Avenue ...
Significance: A well preserved, representative example of an early 20th century Steam powered water pumping station. The site also retains historical significance because of its associations with the city's fi... More
International Smelting & Refining Company, Tooele Smelter, State Route...
Significance: The International Smelting and Refining Company, a subsidiary of the Anaconda Company, began construction of a copper smelting 9 December 1908. On 25 July 1910 the first fire was kindled by the St... More
International Smelting & Refining Company, Tooele Smelter, State Route...
Significance: The International Smelting and Refining Company, a subsidiary of the Anaconda Company, began construction of a copper smelting 9 December 1908. On 25 July 1910 the first fire was kindled by the St... More
Browntown Cotton Gin, SC Route 341 between Johnsonville & Lake City, J...
Significance: Part of a unique collection of buildings known as Browntown, reflecting the self-sufficient way of life practiced by several generations of the Brown family during the 19th & early 20th centuries.... More
Browntown Cotton Gin, SC Route 341 between Johnsonville & Lake City, J...
Significance: Part of a unique collection of buildings known as Browntown, reflecting the self-sufficient way of life practiced by several generations of the Brown family during the 19th & early 20th centuries.... More
Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Blu...
STORED OFF SITE AND ON SITE. mchr Significance: The Battle Creek hydroelectric system was a typical turn-of-the-century California hydroelectric system, characterized by high head plants, the use of the impulse... More
Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Blu...
STORED OFF SITE AND ON SITE. mchr Significance: The Battle Creek hydroelectric system was a typical turn-of-the-century California hydroelectric system, characterized by high head plants, the use of the impulse... More
Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Blu...
STORED OFF SITE AND ON SITE. mchr Significance: The Battle Creek hydroelectric system was a typical turn-of-the-century California hydroelectric system, characterized by high head plants, the use of the impulse... More
Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Blu...
STORED OFF SITE AND ON SITE. mchr Significance: The Battle Creek hydroelectric system was a typical turn-of-the-century California hydroelectric system, characterized by high head plants, the use of the impulse... More
Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Blu...
STORED OFF SITE AND ON SITE. mchr Significance: The Battle Creek hydroelectric system was a typical turn-of-the-century California hydroelectric system, characterized by high head plants, the use of the impulse... More
New York, New Haven & Hartford Railroad, Fort Point Channel Rolling Li...
Significance: The construction of South Station in 1896-98, involved the rerouting of several of the old lines from the west and south. The New York, New Haven & Hartford Railroad constructed a six-track rollin... More
New York, New Haven & Hartford Railroad, Fort Point Channel Rolling Li...
Significance: The construction of South Station in 1896-98, involved the rerouting of several of the old lines from the west and south. The New York, New Haven & Hartford Railroad constructed a six-track rollin... More
New York, New Haven & Hartford Railroad, Fort Point Channel Rolling Li...
Significance: The construction of South Station in 1896-98, involved the rerouting of several of the old lines from the west and south. The New York, New Haven & Hartford Railroad constructed a six-track rollin... More
Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicin...
Significance: A presently rare example of an engine representing, in general, an important stage in steam engineering and, specifically, a form of engine once widely used for ferryboat propulsion. Unprocessed ... More
Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicin...
Significance: A presently rare example of an engine representing, in general, an important stage in steam engineering and, specifically, a form of engine once widely used for ferryboat propulsion. Unprocessed ... More
Lowell Canal System, Merrimack & Concord Rivers, Lowell, Middlesex Cou...
Significance: The City of Lowell is generally considered to be the birthplace of large-scale manufacturing in the U.S. Begun as a transportation canal, the Lowell Canal System evolved, during the 19th century,... More
Yosemite Hydroelectric Power Plant, Highways 120 & 140, Yosemite Villa...
Picryl description: Public domain image of a river or lake, forest, trees, water stream, free to use, no copyright restrictions.
Yosemite Hydroelectric Power Plant, Highways 120 & 140, Yosemite Villa...
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Yosemite Hydroelectric Power Plant, Highways 120 & 140, Yosemite Villa...
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Diamond Reo Motor Plant, 2100 South Washington Street, Lansing, Ingham...
Significance: The Diamond Reo Motor Plant, situated in an industrial area near downtown Lansing, consists of the only known extant and little altered structures associated with Ransom Eli Olds' successful ventu... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility ...
Significance: With the inauguration of nuclear reactor research after World War II, the Atomic Energy Commission (AEC) tried to anticipate and prevent possible nuclear accidents. In 1954, it began the Nuclear S... More
New York, New Haven & Hartford Railroad, Automatic Signalization Syste...
Significance: This system is one of the few automatic semaphore signal installations still in use on a major railroad in the United States. It was a major element in the first large-scale application of high-v... More
New York, New Haven & Hartford Railroad, Automatic Signalization Syste...
Significance: This system is one of the few automatic semaphore signal installations still in use on a major railroad in the United States. It was a major element in the first large-scale application of high-v... More
New York, New Haven & Hartford Railroad, Automatic Signalization Syste...
Significance: This system is one of the few automatic semaphore signal installations still in use on a major railroad in the United States. It was a major element in the first large-scale application of high-v... More
New York, New Haven & Hartford Railroad, Automatic Signalization Syste...
Significance: This system is one of the few automatic semaphore signal installations still in use on a major railroad in the United States. It was a major element in the first large-scale application of high-v... More
New York, New Haven & Hartford Railroad, Automatic Signalization Syste...
Significance: This system is one of the few automatic semaphore signal installations still in use on a major railroad in the United States. It was a major element in the first large-scale application of high-v... More
Fort Riley, Building No. 73, 73 Holbrook Avenue, Riley, Riley County, ...
Significance: Building #73 is the only nineteenth century, single family brick residence at Fort Riley. It does, however, somewhat resemble in scale, materials, and design Building #117, #119 and #121 on Lower... More
Castillo de San Christobal, Boulevard Norzagaray, San Juan, San Juan M...
Public domain photograph related to Puerto Rico, free to use, no copyright restrictions image - Picryl description
Castillo de San Christobal, Boulevard Norzagaray, San Juan, San Juan M...
Picryl description: Public domain image of a fort tower, stone walls, fortification, 18th-19th century, free to use, no copyright restrictions.
Castillo de San Christobal, Boulevard Norzagaray, San Juan, San Juan M...
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Castillo de San Christobal, Boulevard Norzagaray, San Juan, San Juan M...
Public domain photograph related to Puerto Rico, free to use, no copyright restrictions image - Picryl description
Midwest Steel & Iron Works Company, 25 Larimer Street, Denver, Denver ...
Significance: The company is one of Denver's oldest and largest metal fabricators. Since the late 19th century Midwest had produced structural and ornamental components for buildings and engineering structures ... More
Midwest Steel & Iron Works Company, 25 Larimer Street, Denver, Denver ...
Significance: The company is one of Denver's oldest and largest metal fabricators. Since the late 19th century Midwest had produced structural and ornamental components for buildings and engineering structures ... More
Tidal Reservoir, Between Potomac River & Washington Channel, Washingto...
Significance: The Tidal Reservoir is a major element of Potomac Park. Besides providing the park with a picturesque focal point, it serves as a means of flushing waters into the Washington Channel, thereby pre... More
Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price ...
Significance: The Round Lake Logging Dam is one of the few remaining early artifacts of Wisconsin's logging industry. It was built during the industry's log driving and log booming stages when cut timber was c... More
Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price ...
Significance: The Round Lake Logging Dam is one of the few remaining early artifacts of Wisconsin's logging industry. It was built during the industry's log driving and log booming stages when cut timber was c... More
Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price ...
Significance: The Round Lake Logging Dam is one of the few remaining early artifacts of Wisconsin's logging industry. It was built during the industry's log driving and log booming stages when cut timber was c... More
Frisco Charcoal Kilns, Kiln No. 2, State Route 21 (Frisco), Milford, B...
Public domain photograph - historical image of Utah, United States, free to use, no copyright restrictions image - Picryl description
Bonneville Project, Columbia River, 1 mile Northeast of Exit 40, off I...
Significance: Bonneville Dam was the first of eight federal lock and dam projects on the Columbia-Snake rivers. The dam's significance is derived from its unique engineering design, its contribution to the reg... More
Bonneville Project, Columbia River, 1 mile Northeast of Exit 40, off I...
Significance: Bonneville Dam was the first of eight federal lock and dam projects on the Columbia-Snake rivers. The dam's significance is derived from its unique engineering design, its contribution to the reg... More
Bonneville Project, Columbia River, 1 mile Northeast of Exit 40, off I...
Significance: Bonneville Dam was the first of eight federal lock and dam projects on the Columbia-Snake rivers. The dam's significance is derived from its unique engineering design, its contribution to the reg... More
Bonneville Project, Columbia River, 1 mile Northeast of Exit 40, off I...
Significance: Bonneville Dam was the first of eight federal lock and dam projects on the Columbia-Snake rivers. The dam's significance is derived from its unique engineering design, its contribution to the reg... More
Haleakala National Park Roads, Pukalani, Maui County, HI
STORED OFF SITE AND ON SITE. mchr Significance: The Haleakala National Park road system provides access to the summit and crater of the dormant volcano, Haleakala, showcasing striking views and native Hawaiian... More
Haleakala National Park Roads, Pukalani, Maui County, HI
STORED OFF SITE AND ON SITE. mchr Significance: The Haleakala National Park road system provides access to the summit and crater of the dormant volcano, Haleakala, showcasing striking views and native Hawaiian... More
Haleakala National Park Roads, Pukalani, Maui County, HI
STORED OFF SITE AND ON SITE. mchr Significance: The Haleakala National Park road system provides access to the summit and crater of the dormant volcano, Haleakala, showcasing striking views and native Hawaiian... More
Jefferson National Expansion Memorial Arch, Mississippi River between ...
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Jefferson National Expansion Memorial Arch, Mississippi River between ...
Public domain photograph - historic landmark, free to use, no copyright restrictions image - Picryl description
Jefferson National Expansion Memorial Arch, Mississippi River between ...
Public domain photograph - historical image of Missouri, United States, free to use, no copyright restrictions image - Picryl description
Jefferson National Expansion Memorial Arch, Mississippi River between ...
Public domain photograph - historical image of Missouri, United States, free to use, no copyright restrictions image - Picryl description
Taconic State Parkway, Poughkeepsie, Dutchess County, NY
Significance: The Taconic State Parkway represents an important development in the evolution of American transportation planning, park development, and roadway design. Conceived in the 1920s during the height ... More
Taconic State Parkway, Poughkeepsie, Dutchess County, NY
Significance: The Taconic State Parkway represents an important development in the evolution of American transportation planning, park development, and roadway design. Conceived in the 1920s during the height ... More
Taconic State Parkway, Poughkeepsie, Dutchess County, NY
Significance: The Taconic State Parkway represents an important development in the evolution of American transportation planning, park development, and roadway design. Conceived in the 1920s during the height ... More
Taconic State Parkway, Poughkeepsie, Dutchess County, NY
Significance: The Taconic State Parkway represents an important development in the evolution of American transportation planning, park development, and roadway design. Conceived in the 1920s during the height ... More
Taconic State Parkway, Poughkeepsie, Dutchess County, NY
Significance: The Taconic State Parkway represents an important development in the evolution of American transportation planning, park development, and roadway design. Conceived in the 1920s during the height ... More
Taconic State Parkway, Poughkeepsie, Dutchess County, NY
Significance: The Taconic State Parkway represents an important development in the evolution of American transportation planning, park development, and roadway design. Conceived in the 1920s during the height ... More
Taconic State Parkway, Poughkeepsie, Dutchess County, NY
Significance: The Taconic State Parkway represents an important development in the evolution of American transportation planning, park development, and roadway design. Conceived in the 1920s during the height ... More
St. Louis Union Station Powerhouse, South Eighteenth Street, North of ...
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
St. Louis Union Station Powerhouse, South Eighteenth Street, North of ...
Public domain scan of architectural drawing, architecture, free to use, no copyright restrictions image - Picryl description
Eli Whitney Armory, West of Whitney Avenue, Armory Street Vicinity, Ha...
Significance: Location of the musket factory of Eli Whitney, an important contributor to the development of the American System of Manufacturing. It was here that Whitney attempted a system of production that ... More
Mobile Launcher One, Kennedy Space Center, Titusville, Brevard County,...
Structure associated with Apollo 4, Apollo 8, Apollo 11, Skylab & Apollo-Soyuz Test Project. Significance: The mobile launcher is a representative example of the engineering and technology used in the U.S. mann... More
Mobile Launcher One, Kennedy Space Center, Titusville, Brevard County,...
Structure associated with Apollo 4, Apollo 8, Apollo 11, Skylab & Apollo-Soyuz Test Project. Significance: The mobile launcher is a representative example of the engineering and technology used in the U.S. mann... More
Mobile Launcher One, Kennedy Space Center, Titusville, Brevard County,...
Structure associated with Apollo 4, Apollo 8, Apollo 11, Skylab & Apollo-Soyuz Test Project. Significance: The mobile launcher is a representative example of the engineering and technology used in the U.S. mann... More
Kennecott Copper Corporation, On Copper River & Northwestern Railroad,...
Significance: Kennecott's significance lies in its quality, as well as quantity, of high grade ore. The mine also illustrates the history of world and U.S. copper between 1907 and 1938. The rise and decline o... More
Kennecott Copper Corporation, On Copper River & Northwestern Railroad,...
Significance: Kennecott's significance lies in its quality, as well as quantity, of high grade ore. The mine also illustrates the history of world and U.S. copper between 1907 and 1938. The rise and decline o... More
Kennecott Copper Corporation, On Copper River & Northwestern Railroad,...
Significance: Kennecott's significance lies in its quality, as well as quantity, of high grade ore. The mine also illustrates the history of world and U.S. copper between 1907 and 1938. The rise and decline o... More
Kennecott Copper Corporation, On Copper River & Northwestern Railroad,...
Significance: Kennecott's significance lies in its quality, as well as quantity, of high grade ore. The mine also illustrates the history of world and U.S. copper between 1907 and 1938. The rise and decline o... More
Kennecott Copper Corporation, On Copper River & Northwestern Railroad,...
Significance: Kennecott's significance lies in its quality, as well as quantity, of high grade ore. The mine also illustrates the history of world and U.S. copper between 1907 and 1938. The rise and decline o... More
Kennecott Copper Corporation, On Copper River & Northwestern Railroad,...
Significance: Kennecott's significance lies in its quality, as well as quantity, of high grade ore. The mine also illustrates the history of world and U.S. copper between 1907 and 1938. The rise and decline o... More
Kennecott Copper Corporation, On Copper River & Northwestern Railroad,...
Significance: Kennecott's significance lies in its quality, as well as quantity, of high grade ore. The mine also illustrates the history of world and U.S. copper between 1907 and 1938. The rise and decline o... More
Kennecott Copper Corporation, On Copper River & Northwestern Railroad,...
Significance: Kennecott's significance lies in its quality, as well as quantity, of high grade ore. The mine also illustrates the history of world and U.S. copper between 1907 and 1938. The rise and decline o... More
Kennecott Copper Corporation, On Copper River & Northwestern Railroad,...
Significance: Kennecott's significance lies in its quality, as well as quantity, of high grade ore. The mine also illustrates the history of world and U.S. copper between 1907 and 1938. The rise and decline o... More
Northeast Railroad Corridor, Amtrak route between CT & MA state lines,...
Survey number: HAER RI-19 Public domain photograph - historical image of Connecticut, United States, free to use, no copyright restrictions image - Picryl description Public domain photograph - historical im... More
Northeast Railroad Corridor, Amtrak route between CT & MA state lines,...
Survey number: HAER RI-19 Public domain photograph of railway map, railroad tracks, free to use, no copyright restrictions image - Picryl description
Margaret Henschel, an employee at the Intel Corporation's wafer fabric...
Making computer chips is a complex process requiring hundreds of precisely controlled steps that result in patterned layers of various materials built one on top of another. A photolithographic "printing" proce... More
The English and American mechanic: an every-day hand-book for the work...
Also available in digital form.