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Survey map of the District of Alaska, showing the extensive mineral resources of the area: gold, silver, copper, tin, coals, petroleum, marble, and gypsum. The military telegraph, constructed from 1900 to 1905 as the United States federal government's first major infrastructure project in Alaska, is delineated.

The chief geologist for Alaska noted on the map, Alfred H. Brooks, became the eponym for the Brooks Range after his death. Here, the range is labeled as the Baird and Endicott Ranges.

Condition Description
Minor foxing. At upper left in margin, a short tear at top repaired with tape on verso. Top half of centerfold and middle of bottom margin reinforced with tape on verso. Minor foxing Manuscript outline and hand-coloring, not by issuer, around copper mining area in Wrangell Mountains.