Browse Items (19 total)

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.…

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…

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…

An 1881 County and Township map by S.A. Mitchell of Philadelphia. Seven counties are shown in Wyoming, the map not reflecting that the legislative assembly had changed the name of Pease Country to Johnson, two years earlier. Fort Mc Kinney is…

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.

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.

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…

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…