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1898

Cover: Alaska, gold-bearing rocks.

Exploration Book

(Covers to) Map of Alaska Showing Known …

1861

Covers: Report upon the Colorado River o …

Exploration Book

(Covers to) Report Upon The Colorado Riv …

1878

Covers: Joint Maps Of The Northern Bound …

Exploration Book

(Covers to) Joint Maps Of The Northern B …

1889

Cover: Report U.S. Geog. Surveys West of …

Exploration Book

(Covers to) Report upon United States Ge …