Browse Items (19 total)

Most of the area that is now Wyoming, except for a small attachment remaining with Idaho territory, became part of Dakota territory in May of1864, for a four-year period until Wyoming, itself, became a territory in 1868. Not the lightly engraved…

An 1869 Colton map of the new Wyoming territory without delineation of the five counties. The map does not reflect the abandonment of the Bozeman Trail Forts. It errs in placing a "Ft. Hall" on the Medicine Bow River, when its true location was far…

Colton's 1868 map depicts the Union Pacific Railroad construction as reaching the Rawlins area. What later became Wyoming is part of the Dakota territory, just prior to being granted its own territorial status. Freemont's Peak is incorrectly…

The primary mission of the forces commanded by Brigadier General, W.S. Harney in 1855 was to suppress the Sioux in the Dakota country, not yet a territory. He was accompanied by army topographical engineer, Lt. G.K. Warren and geologist, Dr. F.V.…

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…

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…

That portion of Wyoming that lies West of the Continental Divide and North of 42 degrees, was part of Oregon territory from 1848 to 1859. This 1853 map by J. H. Colton of New York incorrectly places the Tetons and contains many errors relating to…

For the fourteen-month period from March 2, 1863, to May 26, 1864, the area that is now Wyoming was part of Idaho territory. On the same 1864 date, Montana became a territory. Sparse population made these jurisdictional changes of little importance.

A map prepared by Lt. Warren, Army Topographical Engineer, to accompany a report to Congress on his mapping expedition of 1855 to the Dakotas, including portions of present-day Wyoming. Warren rose to the rank of Major General during the Civil War.

From an atlas produced by S. Augustus Mitchell of Philadelphia. This 1870 rendering reflects the construction of the Denver Pacific Railroad, joining the Union Pacific at Cheyenne, from the south.