Howard Ditch, East Boulder Community Park, Boulder, Boulder County, CO
Public domain photograph - historical image of Colorado, United States, free to use, no copyright restrictions image - Picryl description
Hoover Dam, U.S. Highway 93 Nevada Segment, U.S. Highway 93, Boulder C...
Significance: This segment of U.S. Highway 93 was constructed by Six Companies, Inc., as a finishing element to Hoover Dam. The segment includes stone parapet walls built in 1932 that display extruded-mortar st... More
Boulder Farm, Dunbarton Road, Hopkinton, Merrimack County, NH
Survey number: HABS NH-42 Building/structure dates: 1816 Initial Construction
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
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
Bureau of Mines Boulder City Experimental Station, Electrolytic Mangan...
Significance: Building 500, as part of the Date Street Complex, was a component of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Bould... More
Bureau of Mines Boulder City Experimental Station, Electrolytic Mangan...
Significance: Building 500, as part of the Date Street Complex, was a component of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Bould... 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
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
Hoover Dam, U.S. Construction Railroad, U.S. Highway 93, Boulder City,...
Significance: The railroad was one of three railroads built and operated specifically to support construction of Hoover Dam and the power plant at the toe of the dam. Survey number: HAER NV-27-Q National Regi... More
Bureau of Mines Boulder City Experimental Station, Warehouse, Date Str...
Significance: Building 700, as part of the Date Street Complex, was part of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Boulder City... More
Bluebird Dam, Rock Cabin, On Ouzel Creek 7 miles west of Allenspark, A...
Survey number: HAER CO-33-A Public domain photograph - historical image of Colorado, United States, free to use, no copyright restrictions image - Picryl description
Hoover Dam, Metropolitan Water District Line 1, U.S. Highway 93, Bould...
Significance: The transmission line was a critical element of the Hoover Dam electrical generation and transmission system. The line provided Hoover Dam power for development of irrigation and municipal water d... More
Bureau of Mines Boulder City Experimental Station, Titanium Research B...
Significance: Building 400, as part of the Date Street Complex, was a component of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Bould... More
Bureau of Mines Metallurgical Research Laboratory, Original Building, ...
Significance: Building 200, as part of the Date Street Complex, was part of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Boulder City... More
Hoover Dam, Nevada Spoils Tunnel, Near the Lower Portal Tunnel Access ...
Significance: It was an important feature in the construction of Hoover Dam. The tunnel that was excavated to allow waste rock from Hoover Dam tunnels and other facilities to be deposited at the Nevada downstre... 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
Las Vegas, Nevada. A mass of transmission towers and transformers redi...
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Hoover Dam, Promontory Water Tank, U.S. Highway 93, Boulder City, Clar...
Significance: It was an element of the central fire protection system of the Hoover Dam switchyard complex. The tank was erected in 1935 in advance of completion of any of the Federal switchyards. It remains fu... More
Locals painted a boulder to welcome Appalachian Trail hikers and other...
Digital image produced by Carol M. Highsmith to represent her original film transparency; some details may differ between the film and the digital images. Title, date, and keywords provided by the photographer.... More
Aerial view of Hoover Dam, near Boulder City, Nevada
Digital image produced by Carol M. Highsmith to represent her original film transparency; some details may differ between the film and the digital images. Title, date, and keywords provided by the photographer.... More
Aerial view of Hoover Dam, near Boulder City, Nevada
Digital image produced by Carol M. Highsmith to represent her original film transparency; some details may differ between the film and the digital images. Title, date, and keywords provided by the photographer.... More
Aerial views of Lake Mead National Recreation Area, formed when Hoover...
Digital image produced by Carol M. Highsmith to represent her original film transparency; some details may differ between the film and the digital images. Title, date, and keywords provided by the photographer.... More
Boulder Bridge, Rock Creek Park, NW, Washington, D.C.
Title, date, subject note, and keywords provided by the photographer. Credit line: The George F. Landegger Collection of District of Columbia Photographs in Carol M. Highsmith's America, Library of Congress, Pr... More
Pine Hills Station, Barracks, West Side of Boulder Creek Road at Engin...
Significance: The Pine Hills Barracks was one of the earliest guard stations constructed by the Civilian Conservation Corps (CCC) as part of the Depression Era economic revitalization plan by United States Gove... More
Pine Hills Station, Barracks, West Side of Boulder Creek Road at Engin...
Significance: The Pine Hills Barracks was one of the earliest guard stations constructed by the Civilian Conservation Corps (CCC) as part of the Depression Era economic revitalization plan by United States Gove... More
Pine Hills Station, Barracks, West Side of Boulder Creek Road at Engin...
Significance: The Pine Hills Barracks was one of the earliest guard stations constructed by the Civilian Conservation Corps (CCC) as part of the Depression Era economic revitalization plan by United States Gove... More
Hoover Dam, Spanning Colorado River at Route 93, Boulder City, Clark C...
Significance: It is a National Historic Landmark, an American Civil Engineering Landmark, and the focus of an historic district listed on the National Register of Historic Places. The dam was constructed betwee... More
Hoover Dam, Spanning Colorado River at Route 93, Boulder City, Clark C...
Significance: It is a National Historic Landmark, an American Civil Engineering Landmark, and the focus of an historic district listed on the National Register of Historic Places. The dam was constructed betwee... 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
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
Howard Ditch, East Boulder Community Park, Boulder, Boulder County, CO
Picryl description: Public domain image of field, irrigation, agriculture, water, free to use, no copyright restrictions.
Bureau of Mines Boulder City Experimental Station, Ore Dressing Pilot ...
Significance: Building 600, as part of the Date Street Complex, was a component of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Bould... More
Hoover Dam, U.S. Highway 93 Nevada Segment, U.S. Highway 93, Boulder C...
Significance: This segment of U.S. Highway 93 was constructed by Six Companies, Inc., as a finishing element to Hoover Dam. The segment includes stone parapet walls built in 1932 that display extruded-mortar st... More
Hoover Dam, Southern California Edison 138-KV Switchyard, U.S. Highway...
Significance: It was the second of six major Federal switchyards built at Hoover Dam. The switchyard was built to replace the Southern Sierras Power Company substation that had provided electricity for construc... More
Boulder Farm, Dunbarton Road, Hopkinton, Merrimack County, NH
Survey number: HABS NH-42 Building/structure dates: 1816 Initial Construction
Hoover Dam, Nevada State Switchyard, U.S. Highway 93, Boulder City, Cl...
Significance: It was the smallest of the six major Federal switchyards at Hoover Dam. This switchyard was constructed to be the principal point at which Nevada's allocation of power from Hoover Dam could be del... 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
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
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
Bureau of Mines Boulder City Experimental Station, Electrolytic Mangan...
Significance: Building 500, as part of the Date Street Complex, was a component of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Bould... More
Hoover Dam, U.S. Highway 93 Arizona Segment, U.S. Highway 93, Boulder ...
Public domain photograph - historical image of Arizona, United States, free to use, no copyright restrictions image - Picryl description
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
Boulder Creek - stereoscopic view, public domain photorpaph
No. 20. Written on back: Boulder Creek. Part of series: U.S. topographical and geological survey of the valley of the Colorado River of the west, by J.W. Powell and A.H. Thompson.
Hoover Dam, U.S. Construction Railroad, U.S. Highway 93, Boulder City,...
Significance: The railroad was one of three railroads built and operated specifically to support construction of Hoover Dam and the power plant at the toe of the dam. Survey number: HAER NV-27-Q National Regi... More
Hoover Dam, Los Angeles Switch Yard, U.S. Highway 93, Boulder City, Cl...
Significance: It was the first and largest of the six major Federal switchyards at Hoover Dam. When the first stage of the switchyard began operations in 1936, it provided electricity at the highest voltages ev... More
Hoover Dam, Los Angeles Switch Yard, U.S. Highway 93, Boulder City, Cl...
Significance: It was the first and largest of the six major Federal switchyards at Hoover Dam. When the first stage of the switchyard began operations in 1936, it provided electricity at the highest voltages ev... More
Bluebird Dam, Rock Cabin, On Ouzel Creek 7 miles west of Allenspark, A...
Survey number: HAER CO-33-A Public domain photograph - historical image of Colorado, United States, free to use, no copyright restrictions image - Picryl description
Bureau of Mines Metallurgical Research Laboratory, Original Building, ...
Significance: Building 200, as part of the Date Street Complex, was part of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Boulder City... More
Bureau of Mines Metallurgical Research Laboratory, Original Building, ...
Significance: Building 200, as part of the Date Street Complex, was part of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Boulder City... More
Hoover Dam, Nevada Spoils Tunnel, Near the Lower Portal Tunnel Access ...
Significance: It was an important feature in the construction of Hoover Dam. The tunnel that was excavated to allow waste rock from Hoover Dam tunnels and other facilities to be deposited at the Nevada downstre... More
Hoover Dam, Nevada Spoils Tunnel, Near the Lower Portal Tunnel Access ...
Significance: It was an important feature in the construction of Hoover Dam. The tunnel that was excavated to allow waste rock from Hoover Dam tunnels and other facilities to be deposited at the Nevada downstre... 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
Bartlett Boulder, Upper Bartlett, White Mountains
Public domain photograph - historical image of New Hampshire, United States, free to use, no copyright restrictions image - Picryl description
[Saranac Lake, boulder bend, Saranac River, Adirondacks, N.Y.]
Public domain photograph - New York, United States, free to use, no copyright restrictions image - Picryl description
Las Vegas, Nevada. Transmission towers and transformers redistributing...
Picryl description: Public domain image of an industrial building, power plant, electric generator, 20th century architecture, free to use, no copyright restrictions.
[Boulder Beach in Stonington, Connecticut]
Date provided by the photographer. Title from related images in same group. Credit line: The George F. Landegger Collection of Connecticut Photographs in the Carol M. Highsmith's America, Library of Congress, P... More
A raging stream in Rocky Mountain National Park in the Front Range of ...
Title, date and keywords based on information provided by the photographer. The towering Front Range is the first mountain range encountered by white settlers years ago, and travelers today, moving west along t... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Nov 1900. 14 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liabilit... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Sep 1895. 9 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liability... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Jul 1910. 21 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liabilit... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Jun 1906. 20 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liabilit... More
Resist nuclear madness!
Public domain photograph - historical image of Colorado, United States, free to use, no copyright restrictions image - Picryl description
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
Hoover Dam, U.S. Highway 93 Nevada Segment, U.S. Highway 93, Boulder C...
Significance: This segment of U.S. Highway 93 was constructed by Six Companies, Inc., as a finishing element to Hoover Dam. The segment includes stone parapet walls built in 1932 that display extruded-mortar st... More
[North Boulder Falls, Rocky Mountains] - stereocsopic card
Part of series: Beauties of the Rocky Mountains. The albumen silver print is a photographic printing process that was widely used in the 19th century. It involves coating paper support with a mixture of egg w... More
Hoover Dam, Switchyard Firehouse, U.S. Highway 93, Boulder City, Clark...
Significance: It was an element of the control and protection system for the Hoover Dam switchyard complex. The Firehouse was built in 1942 during rapid expansion of the switchyard complex and the generating ca... More
A raging stream in Rocky Mountain National Park in the Front Range of ...
Title, date and keywords based on information provided by the photographer. The towering Front Range is the first mountain range encountered by white settlers years ago, and travelers today, moving west along t... More
Sanborn Fire Insurance Map from Boulder, Jefferson County, Montana
Aug 1897. 3 Sheet(s). Montana fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liability.... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Jun 1906. 20 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liabilit... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Nov 1900. 14 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liabilit... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Jul 1910. 21 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liabilit... More
Our Yankee boys forever - Public domain World War One sheet music
words and music by Henry A. Drumm ; arranged by Lenore F. Bradford. (statement of responsibility) For voice and piano. Staff notation. (language)
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
Boulder Fortress Pueblito, Crow Canyon, Dulce, Rio Arriba County, NM
Public domain photograph of Mexico, free to use, no copyright restrictions image - Picryl description
Howard Ditch, East Boulder Community Park, Boulder, Boulder County, CO
Public domain image of wetland, water, free to use, no copyright restrictions image - Picryl description
Bureau of Mines Metallurgical Research Laboratory, Original Building, ...
Significance: Building 200, as part of the Date Street Complex, was part of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Boulder City... More
Tree-shaded Boulder and the curious Flatirons S. from Lovers Hill, Col...
No. (9)-10618. Public domain photograph of landscape view, nature, stereoscopic card, free to use, no copyright restrictions image - Picryl description
Aerial view of Hoover Dam, near Boulder City, Nevada
Digital image produced by Carol M. Highsmith to represent her original film transparency; some details may differ between the film and the digital images. Title, date, and keywords provided by the photographer.... More
Majestic view from the old, one-way, dirt Fall River Road in Rocky Mou...
Title, date and keywords based on information provided by the photographer. Credit line: Gates Frontiers Fund Colorado Collection within the Carol M. Highsmith Archive, Library of Congress, Prints and Photograp... More
View of the timberline from the old, one-way, dirt Fall River Road in ...
Title, date and keywords based on information provided by the photographer. The towering Front Range is the first mountain range encountered by white settlers years ago, and travelers today, moving west along t... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Sep 1895. 9 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liability... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Nov 1900. 14 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liabilit... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Jul 1910. 21 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liabilit... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Jun 1906. 20 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liabilit... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Nov 1900. 14 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liabilit... More
Sanborn Fire Insurance Map from Boulder, Boulder County, Colorado
Jul 1910. 21 Sheet(s). Colorado fire insurance map. Sanborn fire insurance maps are detailed maps of cities and towns produced by the Sanborn Map Company for the purpose of assessing fire insurance liabilit... More
Sammies, fighting Sammies - Public domain World War One sheet music
words and music by Henry A. Drumm ; arranged by Vivian Searcy. (statement of responsibility) For voice and piano. Staff notation. (language)
Boulder Farm, Dunbarton Road, Hopkinton, Merrimack County, NH
Survey number: HABS NH-42 Building/structure dates: 1816 Initial Construction
Hotel Kaaterskill from Boulder Rock, Catskill Mountains, N.Y.
Public domain photograph - panorama, United States, free to use, no copyright restrictions image - Picryl description
Bureau of Mines Metallurgical Research Laboratory, Original Building, ...
Significance: Building 200, as part of the Date Street Complex, was part of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Boulder City... More
Toy sale window, Boulder, Col. Kathrine L. Chace
Title, date and notes from Red Cross caption card. Photographer name or source of original from caption card or negative sleeve: Miss Coburn. Date received: 1 February 1919. Group title: Junior Red Cross. Used ... More
Las Vegas, Nevada. Transmission towers and transformers redistributing...
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Las Vegas, Nevada. A mass of transmission towers and transformers redi...
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Riders on horseback cross a lush meadow in Rocky Mountain National Par...
Title, date and keywords based on information provided by the photographer. The towering Front Range is the first mountain range encountered by white settlers years ago, and travelers today, moving west along t... More