| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 2051 |  | Pat Schroeder, Aspen 1994 | 1994 | Image | uum_map |
| 2052 |  | Peak-flow frequency for tributaries of the Colorado River downstream of Austin, Texas | 1998 | Text | wwdl_er |
| 2053 |  | Pedrite, a Navajo youth | 1905 | Image/StillImage | uaida_main |
| 2054 |  | Pee-A-Rat and Pappoose, Utes | 1899 | Image/StillImage | uaida_main |
| 2055 |  | people in boat, Yampa River | 1976 | Image | uum_map_rr |
| 2056 |  | People in camp | 1976 | Image | uum_map_rr |
| 2057 |  | People in camp | 1976 | Image | uum_map_rr |
| 2058 |  | People in camp | 1976 | Image | uum_map_rr |
| 2059 |  | People on boat, Yampa River | 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999 | Image | uum_map_rr |
| 2060 |  | People on boats | 1976 | Image | uum_map_rr |
| 2061 |  | People on boats | 1976 | Image | uum_map_rr |
| 2062 |  | People on boats | 1976 | Image | uum_map_rr |
| 2063 |  | People on boats | 1976 | Image | uum_map_rr |
| 2064 |  | People on boats, Yampa River | 1976 | Image | uum_map_rr |
| 2065 |  | People on boats, Yampa River | 1976 | Image | uum_map_rr |
| 2066 |  | People on rocks | 1976 | Image | uum_map_rr |
| 2067 |  | People on shore | 1976 | Image | uum_map_rr |
| 2068 |  | People watching a falls on river | 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980 | Image | uum_map_rr |
| 2069 |  | Person in camp | 1976 | Image | uum_map_rr |
| 2070 |  | Pesticides in surface waters of the upper Colorado River basin, Colorado, 1996-98 | 2000 | Text | wwdl_er |
| 2071 |  | Petroglyphs near Green River | 1940; 1941 | uum_map_rr | |
| 2072 |  | Petroglyphs P.20 | 1948 | Image | dha_cp |
| 2073 |  | Petroglyphs P.22 | 1948 | Image | dha_cp |
| 2074 |  | Petroglyphs P.23 | 1948 | Image | dha_cp |
| 2075 |  | Pevige [P-6] | 1894 | Image/StillImage | uaida_main |