This is the rare 1884 Bradley / Mitchell map of Montana, Idaho, and Wyoming.  Covers the territories of Montana, Wyoming, and Idaho in considerable detail with color coding according to counties. Shows American Indian lands, geological formations, forts, cities, maintain passes and river ways.  Also notes the progress of the U.S. Land Survey in this region in the form of grids in the surveyed portions of each territory.  Includes Yellowstone National Park which was created in 1871.  Published by William M. Bradley for inclusion as plates no. 86 and 87 in the 1884 edition of S. A. Mitchell’s  New General Atlas .
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1884 (dated)
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