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Map of the Wyoming territory from 1867 found in the file of photographs and maps separated from Robert B. David's materials collected and organized for his work on the original draft of Malcolm Campbell, Sherriff (1932).

1888 ap of the Wyoming found in the file of photographs and maps separated from Robert B. David's materials collected and organized for his work on the original draft of Malcolm Campbell, Sherriff (1932).

What appears here as the "Yellowstone Park Timber Land Reserve," just East of the National Park, was set aside by President Benjamin Harrison in 1891. Later, it was renamed the Shoshone National Forest. This circa 1903 Cram map shows the Burlington…

This circa 1900 map by George F. Cram of Chicago reflects railroad development in Wyoming. The Burlington and Missouri Valley built across Weston County in 1889. The Union Pacific from Cheyenne north to Wendover and the Oregon Short Line from Granger…

The Oil Domes map on Page 102 of James Thornton's 1925 Wyoming Trip Geological Field Book capture the Upper Cretaceous period identified as a key data point.

Map of K.C. Ranch along the Power River found in the Robert B. David Historical Collection alongside other materials he collected and used while writing about the Johnson County War.

Map of the T.A. Ranch along the Power River found in the Robert B. David Historical Collection alongside other materials he collected and used while writing about the Johnson County War.