| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 1 |
 | Aerial of the south side of Twin Peaks also showing Mineral Basin and Mary Ellen Gulch | 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | uum_map_usa | |
| 2 |
 | Aerial, east side of Twin Peaks, with Mineral Basin and Marry Ellen Gulch | 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | uum_map_usa | |
| 3 |
 | Aerial, Twin Peaks | 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | uum_map_usa | |
| 4 |
 | Aerial, Twin Peaks and Major Evans Gulch | 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | uum_map_usa | |
| 5 |
 | Aspens and Fall | 1931-09-27 | uum_map | |
| 6 |
 | Hiker observing view from Twin Peaks. | 1931-09-27 | Image | uum_map |
| 7 |
 | Hikers observing view of mountains from Twin Peaks. | 1931-09-27 | Image | uum_map |
| 8 |
 | Hikers scaling a steep hill on Twin Peaks. | 1932-10-02 | Image | uum_map |
| 9 |
 | Scenic view from the top of Twin Peaks. | 1932 | Image | uum_map |
| 10 |
 | Scenic view from Twin Peaks [2] | 1932 | Image | uum_map |
| 11 |
 | Scenic view from Twin Peaks. | 1932-10-02 | Image | uum_map |
| 12 |
 | Scenic view of Twin Peaks [2] | 1932-10-02 | Image | uum_map |
| 13 |
 | Summit of Twin Peaks. | 1932-10-02 | Image | uum_map |
| 14 |
 | Three men on the top of Twin Peaks [2] | 1932 | Image | uum_map |
| 15 |
 | Three men on the top of Twin Peaks. | 1932 | Image | uum_map |
| 16 |
 | Three WMC hikers looking up at Twin Peaks [1] | 1931-09-27 | Image | uum_map |
| 17 |
 | Three WMC hikers looking up at Twin Peaks [2] | 1931-09-27 | Image | uum_map |
| 18 |
 | View from Twin Peaks [1] | 1931-09-27 | Image | uum_map |
| 19 |
 | View from Twin Peaks [2] | 1931-09-27 | Image | uum_map |
| 20 |
 | View from Twin Peaks [3] | 1931-09-27 | Image | uum_map |
| 21 |
 | View from Twin Peaks [4] | 1931-09-27 | Image | uum_map |
| 22 |
 | View of mountains from Twin Peaks [1] | 1931-09-27 | Image | uum_map |
| 23 |
 | View of mountains from Twin Peaks [2] | 1931-09-27 | Image | uum_map |
| 24 |
 | View of mountains from Twin Peaks. | 1931-09-27 | Image | uum_map |
| 25 |
 | View of Twin Peaks [1] | 1932-10-02 | Image | uum_map |