| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 1 |
 |
Clarence L. Coffman, Simpson Springs Pony Express Monument 87 | 1940; 1941 | Image | dha_ccc |
| 2 |
 |
Coleman Wright Seal, Callao Camp, Pony Express monument No. 83 | 1939 | Image | dha_ccc |
| 3 |
 |
Coleman Wright Seal, Callao Camp, Pony Express trail marker | 1939 | Image | dha_ccc |
| 4 |
 |
Coleman Wright Seal, Callao Camp, Pony Express trail marker No. 83 | 1939 | Image | dha_ccc |
| 5 |
 |
Coleman Wright Seal, Callao Camp, Pony Express trail marker on tree | 1939 | Image | dha_ccc |
| 6 |
 |
Recreation site plan development of Bureau of Land Management's Pony Express trail area using airborne videography | 1996-05 | Text | ir_htca |