| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 476 |
 | Oats Field, Wells, Nevada | 1910-08-23 | Image | dha_scp |
| 477 |
 | Oats in Stacks, Wells, Nevada | 1910-08-23 | Image | dha_scp |
| 478 |
 | Ophir Camp, Birds eye. Neco mining district - Nevada | 1908; 1909; 1910; 1911; 1912 | Image | uum_map |
| 479 |
 | Oregon-California trip, 1921: Searchlight, Nevada, north of Needles, California | 1921-08-21 | Image/StillImage | uum_map |
| 480 |
 | Osceola, Nevada [01] | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960 | Image | uum_map |
| 481 |
 | Osceola, Nevada [02] | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960 | Image | uum_map |
| 482 |
 | Outlet Tunnel, Bishop Creek, Wells, Nevada | 1910-08-23 | Image | dha_scp |
| 483 |
 | Personal account of downwinders and nuclear weapons testing: Sara Penny | 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016 | Text | uum_dua |
| 484 |
 | Pheasants, Nevada | 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965 | Image | uum_map |
| 485 |
 | Photographic copy of List of Mining Districts; 1912-1914 | 1914 | Image | uum_map |
| 486 |
 | Photographic copy of U.S. Geologic Survey Publication Geological Chart of the State of Nevada, with location of Ophir Mines drawn in | 1908; 1909; 1910; 1911; 1912 | Image | uum_map |
| 487 |
 | Pilot Peak p.1 | 1929; 1930 | Image/StillImage | dha_cp |
| 488 |
 | Pineapple cactus in the desert, Boulder City, Nevada | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945 | Image | uum_map |
| 489 |
 | Pioche - Nevada | 1910-05 | Image/StillImage | uum_map |
| 490 |
 | Pioche - Nevada | 1910-05 | Image/StillImage | uum_map |
| 491 |
 | Pioche - Nevada - Abandoned Pumping Plant | 1910-05 | Image/StillImage | uum_map |
| 492 |
 | Pioche - Nevada - Dickie Hotel | 1910-05 | Image/StillImage | uum_map |
| 493 |
 | Pioche - Nevada - Mountains from Southwest | 1910-05 | Image/StillImage | uum_map |
| 494 |
 | Pioche - Nevada - Raymond and Ely fissure | 1910-05 | Image/StillImage | uum_map |
| 495 |
 | Pioche - Nevada - Ten Miles East of | 1910-05 | Image/StillImage | uum_map |
| 496 |
 | Pioche - Nevada - Ten Miles East of | 1910-05 | Image/StillImage | uum_map |
| 497 |
 | Pit at Ruth, Nevada | 1930; 1931; 1932; 1933; 1934; 1935; 1936 | uum_map | |
| 498 |
 | Placer Mine, Ely, Nevada [01] | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959 | Image | uum_map |
| 499 |
 | Placer Mine, Ely, Nevada [02] | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959 | Image | uum_map |
| 500 |
 | Placer Mine, Ely, Nevada [03] | 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959 | Image | uum_map |