| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 426 |
 | Trees in Grand Canyon | 1927; 1928; 1929; 1930; 1931; 1932 | Image/StillImage | dha_gmo |
| 427 |
 | Trees of Liberty Park | 1900; 1901; 1902; 1903; 1904; 1905; 1906; 1907; 1908; 1909; 1910; 1911; 1912; 1913; 1914; 1915; 1916; 1917; 1918; 1919; 1920; 1921; 1922; 1923; 1924; 1925 | Image/StillImage | dha_gmo |
| 428 |
 | Two men on horses with dogs, Bryce Canyon | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929; 1930 | Image/StillImage | dha_gmo |
| 429 |
 | Two men on horses, Casto Canyon | 1921-03 | Image/StillImage | dha_gmo |
| 430 |
 | Two people scrambling up a sandstone face [1] | 1962 | uum_map_rr | |
| 431 |
 | Two people scrambling up a sandstone face [2] | 1962 | uum_map_rr | |
| 432 |
 | Two unidentified people sitting on top of a mountain | Image | uum_map | |
| 433 |
 | Tyler Phillips, Salt Lake City, UT: an interview by Erik Solberg, 24 June 2008 | 2008-06-24 | Text | uum_elc |
| 434 |
 | Unidentified backcountry ski tourers. | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960 | Image | uum_map_usa |
| 435 |
 | Unidentified caver | Image | uum_map | |
| 436 |
 | Unidentified man climbing [1] | Image | uum_map | |
| 437 |
 | Unidentified man climbing [2] | Image | uum_map | |
| 438 |
 | Unidentified man rappelling | Image | uum_map | |
| 439 |
 | Unidentified people climbing | Image | uum_map | |
| 440 |
 | Unidentified person climbing | Image | uum_map | |
| 441 |
 | Unidentified spelunker descending cave | Image | uum_map | |
| 442 |
 | View of the Grand Canyon | 1927; 1928; 1929; 1930; 1931; 1932 | Image/StillImage | dha_gmo |
| 443 |
 | Wall of the Grand Canyon | 1927; 1928; 1929; 1930; 1931; 1932 | Image/StillImage | dha_gmo |
| 444 |
 | Wall of the Grand Canyon | 1927; 1928; 1929; 1930; 1931; 1932 | Image/StillImage | dha_gmo |
| 445 |
 | Wall of the Grand Canyon near walkway | 1927; 1928; 1929; 1930; 1931; 1932 | Image/StillImage | dha_gmo |
| 446 |
 | Walls of Grand Canyon | 1927; 1928; 1929; 1930; 1931; 1932 | Image/StillImage | dha_gmo |
| 447 |
 | Walls of Grand Canyon | 1927; 1928; 1929; 1930; 1931; 1932 | Image/StillImage | dha_gmo |
| 448 |
 | Walls of Grand Canyon from hillside | 1927; 1928; 1929; 1930; 1931; 1932 | Image/StillImage | dha_gmo |
| 449 |
 | Walls of Grand Canyon from near shrubbery | 1927; 1928; 1929; 1930; 1931; 1932 | Image/StillImage | dha_gmo |
| 450 |
 | Walls of Grand Canyon, from among rocks | 1927; 1928; 1929; 1930; 1931; 1932 | Image/StillImage | dha_gmo |