| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 26 |
 |
San Juan River raft trip, May 1991 [26] | 1991-05 | uum_map | |
| 27 |
 |
Union Pacific Railroad P. 74 | 1991-05 | Image | dha_cp |
| 28 |
 |
Union Pacific Railroad P. 75 | 1991-05 | Image | dha_cp |
| 29 |
 |
Union Pacific Railroad P. 76 | 1991-05 | Image | dha_cp |
| 30 |
 |
Union Pacific Railroad P. 78 | 1991-05 | Image | dha_cp |
| 31 |
 |
Union Pacific Railroad P. 80 | 1991-05 | Image | dha_cp |
| 32 |
 |
Union Pacific Railroad P. 81 | 1991-05 | Image | dha_cp |
| 33 |
 |
Union Pacific Railroad P. 82 | 1991-05 | Image | dha_cp |
| 34 |
 |
Union Pacific Railroad P. 83 | 1991-05 | Image | dha_cp |