1955 Map of Bradfield Canal A-1, 1975 Print
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1955 Map of Bradfield Canal A-1

USGS Topo · Published 1975

About this map

The international boundary between Alaska and British Columbia carves through a landscape dominated by massive ice fields and the high peaks of the Tongass National Forest. Surveyed in the mid-1950s, this area shows the specialized infrastructure required for high-altitude resource extraction, including an Aerial Tramway and a Tractor Trail leading toward the Riverside Mine near the banks of the Salmon River.


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Map Details

Date Portrayed1955
Date Published1975
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:63,360
Physical Dimensions17.99 x 21.83 inches

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Source Details

CopyrightPublic Domain