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1950 Map of Healy A-4, 1965 Print
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1950 Map of Healy A-4

USGS Topo · Published 1965

About this map

Caribou Pass serves as a critical high-elevation transition point in this remote Alaskan wilderness within the Matanuska-Susitna Borough. Photogrammetric methods from 1949 aerial surveys reveal a landscape defined by complex drainage systems where the headwaters of the Jack River and South Creek flow through deeply incised valleys. The map illustrates the convergence of multiple watersheds, most notably where the East Fork Chulitna River and Tsusena Creek carve through the terrain. These waterways reflect the natural travel corridors used before formal roads reached the interior. The presence of Portage Creek further highlights the historical transit patterns of a region still largely unsurveyed and unmarked on the ground at the time of the 1950 field annotation.

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Map Details

Date Portrayed1950
Date Published1965
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:63,360
Physical Dimensions19.1 x 20.8 inches

Editions of this 1950 Healy A-4 Map

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain