| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 426 |
 | Colorado Canyon 1900: fault | 1900 | Image | uum_map |
| 427 |
 | Colorado Canyon 1900: Petrified wood | 1900 | Image | uum_map |
| 428 |
 | Colorado Canyon 1900: terraces | 1900 | Image | uum_map |
| 429 |
 | Colorado Canyon from Vulcan's Throne | 1900 | Image | uum_map |
| 430 |
 | Colorado River - Near Lees Ferry - Arizona | 1932-05 | Image/StillImage | uum_map |
| 431 |
 | Colorado River -- Excursions p.16 | 1949-06-17 | Image/StillImage | dha_cp |
| 432 |
 | Colorado River -- Excursions p.5 | 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960 | Image/StillImage | dha_cp |
| 433 |
 | Colorado River -- Grand Canyon p.1 | 1958-10-04 | Image/StillImage | dha_cp |
| 434 |
 | Colorado River -- Kanab Creek p.1 | 1934 | Image/StillImage | dha_cp |
| 435 |
 | Colorado River -- Lee's Ferry p.1 | 1960 | Image/StillImage | dha_cp |
| 436 |
 | Colorado River -- Lee's Ferry p.2 | 1960 | Image/StillImage | dha_cp |
| 437 |
 | Colorado River -- Lee's Ferry p.3 | 1935-03-19 | Image/StillImage | dha_cp |
| 438 |
 | Colorado River -- Marble Canyon, Ariz. p.1 | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950 | Image/StillImage | dha_cp |
| 439 |
 | Colorado River -- Marble Canyon, Ariz. p.2 | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950 | Image/StillImage | dha_cp |
| 440 |
 | Colorado River -- Marble Canyon, Ariz. p.3 | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940 | Image/StillImage | dha_cp |
| 441 |
 | Colorado River -- Marble Canyon, Ariz. p.4 | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940 | Image/StillImage | dha_cp |
| 442 |
 | Colorado River -- Marble Canyon, Ariz. p.5 | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940 | Image/StillImage | dha_cp |
| 443 |
 | Colorado River -- Marble Canyon, Ariz. p.6 | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940 | Image/StillImage | dha_cp |
| 444 |
 | Colorado River -- Separation Rapids p.1 | 1939-08-28 | Image/StillImage | dha_cp |
| 445 |
 | Colorado River -- Toroweap P.1 | 1961 | Image/StillImage | dha_cp |
| 446 |
 | Colorado River above Soap Creek Rapid, 1967 | 1967 | Image/StillImage | uum_map_rr |
| 447 |
 | Colorado River Area p.4 | 1957-03-13 | Image/StillImage | dha_cp |
| 448 |
 | Colorado River At Foot Of Bright Angel Trail | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929 | Image/StillImage | uum_map |
| 449 |
 | Colorado River Bridge (Glen Canyon) P.1 | Image | dha_cp | |
| 450 |
 | Colorado River Bridge (Glen Canyon) P.10 | Image | dha_cp |