The theme this week is Geological Surveys.
Local Identifier: 57-GH-PRIND-477, Photograph of Dock in Dawson City, Yukon, June 13, 1906, Geologist L.M. Prindle
Local Identifier: 57-GH-WOOLL-1-19A, “Party at camp about 3 miles below Green River, Wyoming, July 13, 1922”, Photograph by Hydraulic Engineer Ralf R. Woolley (Taken during the USGS survey of the Green River from July through September, 1922)
Local Identifier: 57-GH-LEE-2295, “Washington, D.C., View of Great Falls of Potomac River from Virginia side, April 1922”, Photograph by Geologist Willis T. Lee