1920. 2020-03-05T17:47:46Z. 2020-03-05T17:47:46Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. Grand Canyon (Ariz.), Coconino County (Ariz.), Arizona, Coconino County., and Grand Canyon.
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1920. 2011-05-17T17:43:34Z. 2015-10-21T14:59:20Z. Geological Survey (U.S.). The Survey. English. Public. Albany County (Wyo.), Jackson County (Colo.), Larimer County (Colo.), and Rocky Mountain National Park (Colo.).
1920. 2021-10-08T19:21:32Z. 2021-10-09T03:01:53Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. Mount Rainier National Park (Wash.), Washington (State), and Mount Rainier National Park.
1920. 2013-03-15T13:05:24Z. 2013-03-15T13:05:24Z. Darton, Nelson Horatio, 1865-1948. The Survey. English. Public. Kansas, Finney County, Grant County, Hamilton County, Haskell County, Kearny County, and Stanton County.
1920. 2011-05-19T17:16:50Z. 2011-05-19T17:16:50Z. Geological Survey (U.S.). The Survey. English. Public. Yosemite National Park (Calif.).
1920. 2011-05-27T19:50:04Z. 2015-10-21T15:00:04Z. Geological Survey (U.S.). The Survey. English. Public. Albemarle County (Va.), Amherst County (Va.), Appomattox County (Va.), Augusta County (Va.), Buckingham (Va.), Buckingham County (Va.), Buckingham Region (Va.), Nelson County (Va.), and Virginia.