US Geological Survey, 1906.
Map. Color lithograph. 37" x 33 1/4".
This detailed topographic map of the Controller Bay region of Alaska includes the Bering Glacier, the largest glacier in North America. Contour and hachure lines indicate elevation and red coloring is used to indicate workable coal seams. Oil wells and tunnels are noted on the map, showing as far north as the Martin River Glacier, as far south as Controller Bay and Okalee Spit, as far west as Softuk Bar, Katalla Bay, and the Pacific Ocean, and as far east as the Bering Glacier. A wonderful example of a geologic map. Minor wear along natural folds, in good condition.