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Deer Creek Dam, CCC Government Camp, West side of U.S. Highway 189, north of railroad overpass and 2,000 feet southwest of Deer Creek Dam, Charleston, Wasatch County, UT

Keechelus Dam, Gauging Station, Yakim River, 10 miles northwest of Easton, Easton, Kittitas County, WA

Hoover Dam, Promontory Water Tank, U.S. Highway 93, Boulder City, Clark County, NV

Columbia Basin Project, Banks Lake Dry Falls Dam & Main Canal Headworks, South end of Banks Lake, Northwest of Coulee City, Grand Coulee, Grant County, WA

Standard Oil Bulk Depot, Center Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, West Valve House, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, West Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, East Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Salmon Creek Diversion Dam, Main Canal Headworks, Salmon Creek, Okanogan, Okanogan County, WA

Salmon Creek Diversion Dam, Main Canal Headworks, Salmon Creek, Okanogan, Okanogan County, WA

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Standard Oil Bulk Depot, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, East Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, West Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, Center Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, West Valve House, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, Center Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, West Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, East Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Standard Oil Bulk Depot, East Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Standard Oil Bulk Depot, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, Center Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, West Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, West Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, Center Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Standard Oil Bulk Depot, Center Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Standard Oil Bulk Depot, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, Center Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Standard Oil Bulk Depot, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Standard Oil Bulk Depot, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Standard Oil Bulk Depot, Center Shed, Along Burlington Northern Railroad near Burlington Avenue, Cody, Park County, WY

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Idaho National Engineering Laboratory, Arco Naval Proving Ground, Scoville, Butte County, ID

Hoover Dam, Static Towers & Lines, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Static Towers & Lines, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Static Towers & Lines, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Static Towers & Lines, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Static Towers & Lines, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Static Towers & Lines, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Lower Portal Access Road, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Lower Portal Access Road, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Lower Portal Access Road, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Lower Portal Access Road, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Lower Portal Access Road, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Lower Portal Access Road, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Lower Portal Access Road, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Lower Portal Access Road, U.S. Highway 93, Boulder City, Clark County, NV

Hoover Dam, Lower Portal Access Road, U.S. Highway 93, Boulder City, Clark County, NV

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ

Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ