
The international border between the Canada United States of America defines the central axis of this landscape, carving a sharp diagonal through the wilderness of Southeast Alaska. This boundary line separates the interior highlands of British Columbia from the coastal regions of the Tongass National Forest, illustrating the remote and geopolitical character of the Pacific Northwest. The map provides a look at the Public Land Survey System grid as it meets the jagged international line, including sections within t51s r80e, t51s r81e, and t52s r81e. This cartographic record of the Petersburg Borough region highlights the intersection of national administrative boundaries and the natural topography of the Alaska-Canada frontier.
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This is the sole edition of this map. No revisions or reprints were ever made.
1952 · Sumdum
USGS Topo · 1:250,000
1961 · Sumdum B-2
USGS Topo · 1:63,360
1961 · Sumdum C-2
USGS Topo · 1:63,360
1961 · Sumdum
USGS Topo · 1:250,000
2000 · Sumdum B-2
USGS Topo · 1:63,360
2018 · Sumdum B-2 SW
USGS Topo · 1:25,000
2018 · Sumdum C-2 SW
USGS Topo · 1:25,000
2018 · Sumdum B-2 NW
USGS Topo · 1:25,000
2018 · Sumdum B-2 OE E SW
USGS Topo · 1:25,000
2018 · Sumdum B-2 SE
USGS Topo · 1:25,000