| Cokeville survivor oral history, LeaKae Roberts Weston | Wyoming State Archives |
| Cokeville survivor oral history, Rachel Walker Hollibaugh | Wyoming State Archives |
| Cokeville survivor oral history, Rich Haskell | Jessica Clark |
| Cokeville survivor oral history, Ron Hartley | Wyoming State Archives |
| Cokeville survivor oral history, Tina Cook | Wyoming State Archives |
| Colby Mammoth Site | WyomingHeritage.org |
| Colby Mammoth Site | |
| Cole Creek train wreck | Lori Van Pelt |
| Como Bluff | |
| Como Bluff | Stephanie Lowe |
| Connor Battlefield | |
| Connor Battlefield | WyomingHeritage.org |
| Connor, Patrick E. | Ellis Hein |
| Converse County, Wyoming | Doug McInnis |
| Cook, Tina, Cokeville survivor oral history | Wyoming State Archives |
| Coolidge, Sherman | Tadeusz Lewandowski |
| Cooper House | |
| Corum, Alfred, pioneer grave of | Randy Brown |
| Cottonwood Creek Dinosaur Trail | |
| Cowley Pioneer Museum | |
| Craig Thomas Discovery and Visitor Center | |
| Crane, Arthur | Wyoming State Archives |
| Crane, Arthur, welcome of to UW campus, 1922 | Phil Roberts |
| Crimson Dawn Park & Museum | |
| Crook County Museum and Art Gallery | |
| Crook County, Wyoming | Nicole Lebsack |
| Crook, Gen. George Campaign sign | |
| Crook, Gen. George, campaigns of 1876 | Lori Van Pelt |
| Crossings, North Platte River; Oregon Trail sites of | WyoHistory.org |
| Crow Creek Ranch | Stephanie Lowe |
| Curry, Peggy Simson, Wyoming Poet Laureate 1981-1987 | Lori Van Pelt |
| Daniel Lantz grave | Randy Brown |
| Daniel Lantz grave | |
| Dansie, Charlotte, pioneer grave of | Randy Brown |
| David, Bob in World War I | Tom Rea |
| Davison, Kathy, Cokeville survivor oral history | Wyoming State Archives |
