| Schneider, Adam, Featherweight Boxer | Washakie Museum and Cultural Center |
| Second Baptist Church, Rock Springs | Brie Blasi |
| Seminoe Cutoff | Randy Brown |
| Sheepeaters | Rebecca Hein |
| Shoshone Reservation, 1905 Land Cession Agreement | WyoHistory.org |
| Siberia, 2nd Lt. Paul Kendall’s service in, 1919-1920 | Douglas R. Cubbison |
| Simpson, Milward | Wyoming State Archives |
| Simpson, Milward - interview | Wyoming State Archives |
| Simpson’s Hollow | WyoHistory.org |
| Sixth Crossing of the Sweetwater, Oregon Trail historic site | WyoHistory.org |
