Thatcher Bridge, Spanning Bear River, Thatcher, Franklin County, ID
Significance: A steel through Warren truss bridge typical of bridges constructed in the area during the early 1900's. / This bridge was constructed in 1910 to serves as a main farm to market crossing over the B... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Rock Creek Bridge, Shoshone Street West spanning Rock Creek, Twin Fall...
Significance: The Rock Creek Bridge is exceptionally unique as one of only two viaduct-type highway bridges in the Idaho State Bridge Inventory. / In a historical context, the structure reflects the vast improv... More
Fall River Bridge, Spanning Fall River on CCC Camp Road, Ashton, Fremo...
Significance: The Fall River Bridge is extremely significant as the only known example of a timber Howe pony truss remaining in Idaho. It represents, in fact, one of the few survivals of this bridge type in th... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Oldtown Bridge, Spanning Pend Oreille River, U.S. Highway 2, Oldtown, ...
Significance: Early example of long truss technology in Idaho and a crucial link on the highway system. As a transportation link, the Oldtown Bridge was of tremendous significance on a local, state and national... More
Fall River Bridge, Spanning Fall River on CCC Camp Road, Ashton, Fremo...
Significance: The Fall River Bridge is extremely significant as the only known example of a timber Howe pony truss remaining in Idaho. It represents, in fact, one of the few survivals of this bridge type in th... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Thatcher Bridge, Spanning Bear River, Thatcher, Franklin County, ID
Significance: A steel through Warren truss bridge typical of bridges constructed in the area during the early 1900's. / This bridge was constructed in 1910 to serves as a main farm to market crossing over the B... More
Thatcher Bridge, Spanning Bear River, Thatcher, Franklin County, ID
Significance: A steel through Warren truss bridge typical of bridges constructed in the area during the early 1900's. / This bridge was constructed in 1910 to serves as a main farm to market crossing over the B... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Rock Creek Bridge, Shoshone Street West spanning Rock Creek, Twin Fall...
Significance: The Rock Creek Bridge is exceptionally unique as one of only two viaduct-type highway bridges in the Idaho State Bridge Inventory. / In a historical context, the structure reflects the vast improv... More
Rock Creek Bridge, Shoshone Street West spanning Rock Creek, Twin Fall...
Significance: The Rock Creek Bridge is exceptionally unique as one of only two viaduct-type highway bridges in the Idaho State Bridge Inventory. / In a historical context, the structure reflects the vast improv... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Thatcher Bridge, Spanning Bear River, Thatcher, Franklin County, ID
Significance: A steel through Warren truss bridge typical of bridges constructed in the area during the early 1900's. / This bridge was constructed in 1910 to serves as a main farm to market crossing over the B... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Thatcher Bridge, Spanning Bear River, Thatcher, Franklin County, ID
Significance: A steel through Warren truss bridge typical of bridges constructed in the area during the early 1900's. / This bridge was constructed in 1910 to serves as a main farm to market crossing over the B... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Rock Creek Bridge, Shoshone Street West spanning Rock Creek, Twin Fall...
Significance: The Rock Creek Bridge is exceptionally unique as one of only two viaduct-type highway bridges in the Idaho State Bridge Inventory. / In a historical context, the structure reflects the vast improv... More
Rock Creek Bridge, Shoshone Street West spanning Rock Creek, Twin Fall...
Significance: The Rock Creek Bridge is exceptionally unique as one of only two viaduct-type highway bridges in the Idaho State Bridge Inventory. / In a historical context, the structure reflects the vast improv... More
Fall River Bridge, Spanning Fall River on CCC Camp Road, Ashton, Fremo...
Significance: The Fall River Bridge is extremely significant as the only known example of a timber Howe pony truss remaining in Idaho. It represents, in fact, one of the few survivals of this bridge type in th... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Thatcher Bridge, Spanning Bear River, Thatcher, Franklin County, ID
Significance: A steel through Warren truss bridge typical of bridges constructed in the area during the early 1900's. / This bridge was constructed in 1910 to serves as a main farm to market crossing over the B... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Fall River Bridge, Spanning Fall River on CCC Camp Road, Ashton, Fremo...
Significance: The Fall River Bridge is extremely significant as the only known example of a timber Howe pony truss remaining in Idaho. It represents, in fact, one of the few survivals of this bridge type in th... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Rock Creek Bridge, Shoshone Street West spanning Rock Creek, Twin Fall...
Significance: The Rock Creek Bridge is exceptionally unique as one of only two viaduct-type highway bridges in the Idaho State Bridge Inventory. / In a historical context, the structure reflects the vast improv... More
Oldtown Bridge, Spanning Pend Oreille River, U.S. Highway 2, Oldtown, ...
Significance: Early example of long truss technology in Idaho and a crucial link on the highway system. As a transportation link, the Oldtown Bridge was of tremendous significance on a local, state and national... More
Fall River Bridge, Spanning Fall River on CCC Camp Road, Ashton, Fremo...
Significance: The Fall River Bridge is extremely significant as the only known example of a timber Howe pony truss remaining in Idaho. It represents, in fact, one of the few survivals of this bridge type in th... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Thatcher Bridge, Spanning Bear River, Thatcher, Franklin County, ID
Significance: A steel through Warren truss bridge typical of bridges constructed in the area during the early 1900's. / This bridge was constructed in 1910 to serves as a main farm to market crossing over the B... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Rock Creek Bridge, Shoshone Street West spanning Rock Creek, Twin Fall...
Significance: The Rock Creek Bridge is exceptionally unique as one of only two viaduct-type highway bridges in the Idaho State Bridge Inventory. / In a historical context, the structure reflects the vast improv... More
Oldtown Bridge, Spanning Pend Oreille River, U.S. Highway 2, Oldtown, ...
Significance: Early example of long truss technology in Idaho and a crucial link on the highway system. As a transportation link, the Oldtown Bridge was of tremendous significance on a local, state and national... More
Fall River Bridge, Spanning Fall River on CCC Camp Road, Ashton, Fremo...
Significance: The Fall River Bridge is extremely significant as the only known example of a timber Howe pony truss remaining in Idaho. It represents, in fact, one of the few survivals of this bridge type in th... More
Fall River Bridge, Spanning Fall River on CCC Camp Road, Ashton, Fremo...
Significance: The Fall River Bridge is extremely significant as the only known example of a timber Howe pony truss remaining in Idaho. It represents, in fact, one of the few survivals of this bridge type in th... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Burton Road Bridge, Spanning Little Weiser River, Cambridge, Washingto...
Significance: One of only a few Idaho bridges built by prominent western contractor Charles G. Sheely. One of the first steel bridges in Washington County and may have set standards for local steel bridge buil... More
Oldtown Bridge, Spanning Pend Oreille River, U.S. Highway 2, Oldtown, ...
Significance: Early example of long truss technology in Idaho and a crucial link on the highway system. As a transportation link, the Oldtown Bridge was of tremendous significance on a local, state and national... More
Oldtown Bridge, Spanning Pend Oreille River, U.S. Highway 2, Oldtown, ...
Significance: Early example of long truss technology in Idaho and a crucial link on the highway system. As a transportation link, the Oldtown Bridge was of tremendous significance on a local, state and national... More
Oldtown Bridge, Spanning Pend Oreille River, U.S. Highway 2, Oldtown, ...
Significance: Early example of long truss technology in Idaho and a crucial link on the highway system. As a transportation link, the Oldtown Bridge was of tremendous significance on a local, state and national... More
Fall River Bridge, Spanning Fall River on CCC Camp Road, Ashton, Fremo...
Significance: The Fall River Bridge is extremely significant as the only known example of a timber Howe pony truss remaining in Idaho. It represents, in fact, one of the few survivals of this bridge type in th... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Donovan's Mill, Silver City, Lyon County, NV
Significance: The Donovan Mill was the first cyanide process mill established on the Comstock, and opened the way for the great technological revolution in metallurgy. Unprocessed Field note material exists fo... More
Mizpah Mine, Tonopah, Nye County, NV
Significance: The Tonopah Mining boom was the first to revive the mining industry in Nevada after two decades of depression. Mining activity was long sustained at Tonopah largely due to the amazing production ... More