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1961 Map of Sumdum D-3, 1966 Print
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1961 Map of Sumdum D-3

USGS Topo · Published 1966

About this map

South Sawyer Glacier dominates this high-altitude 1961 survey, documenting the frozen flow of ice through the coastal mountains of Southeast Alaska. The map captures the international boundary as it runs between the United States and Canada, specifically marking the divide between Alaska and British Columbia. This specific quadrangle serves as a detailed topographic record of the ice fields within the Tongass National Forest before significant late-century glacial retreat occurred.

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Map Details

Date Portrayed1961
Date Published1966
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:63,360
Physical Dimensions17 x 20.8 inches

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain