| Title | Author |
|---|---|
| Rocky Mountain Oilfield Testing Center at Teapot Dome Oil Field | Carolynne Harris |
| Rocky Ridge | |
| Rocky Ridge | WyoHistory.org |
| Rogers, Clifford | Wyoming State Archives |
| Roncalio, Teno, biographical essay | Joan Barron |
| Roosevelt, Theodore 1903 Horseback Travel Route | |
| Roosevelt, Theodore visits Wyoming in 1903 Visit | Rebecca Hein |
| Roripaugh, Robert, Wyoming Poet Laureate 1995-2002 | John D. Nesbitt |
| Rosa, Michael Angel | Paul Krza |
| Ross, Nellie | Wyoming State Archives |