Wyoming State Archives, accessed February 2014 – October 2014, wyoarchives.state.wy.us
American Heritage Center (at the U. of Wyoming), accessed January 2014 – November 2014, www.uwyo.edu/ahc, http://www.uwyo.edu/ahc/collections/digital.html
Wyoming Tales and Trails, accessed February 2014 – November 2014, www.wyomingtalesandtrails.com
Original drawings by Bugler C. Moellman, U.S. Army 11th Ohio Cavalry soldier, one map and eight drawings in pencil and colored pencil of military posts and telegraphs stations on the Oregon Trail in Wyoming (Division of the Platte, 1863)
Prepared under the direction of Major Alexander Perry, Diagram of Fort Sanders as it stood in 1871’s showing the buildings, creek, stables and parade grounds (Division of the Platte, 1871)
Bella Pope, Overlay of Fort Sanders Diagram, 1871 drawing on top of a google earth map (Laramie, 2013)