Filters: Tags: Montana Professional Paper 231 (X) > partyWithName: U.S. Geological Survey (X)

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Frontal margin of Sperry Glacier, resting on terminal moraine. Glacier National Park, 1913. Album caption: Front of ice on terminal moraine of Sperry Glacier; when seen in 1927 and 1936 the ice front had receded some distance from this moraine. Glacier National Park. Montana. August 16, 1913. Figure 41, in U.S.Geological Survey Professional paper 231. 1953. Handwritten notes on album caption: Montana. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alden, W.C. Collection, Glacier National Park, Glaciers, Montana Professional Paper 231, National Parks, All tags... Photographers, photo print, Fewer tags