| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 201 |  | Amtrak P.1 | 1975-08-30 | Image/StillImage | dha_cp |
| 202 |  | Amtrak P.12 | 1989-04-25 | Image/StillImage | dha_cp |
| 203 |  | Amtrak P.13 | 1989-05-14 | Image/StillImage | dha_cp |
| 204 |  | Amtrak P.14 | 1989-04-25 | Image/StillImage | dha_cp |
| 205 |  | Analysis of ground-water-quality data of the Upper Colorado River basin, water years 1972-92 | 1998 | Text | wwdl_er |
| 206 |  | Anasazi cliff dwelling, Mesa Verde National Park | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950 | Image | uum_map_rr |
| 207 |  | Anasazi ruins [1] | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950 | Image | uum_map_rr |
| 208 |  | Anasazi ruins [2] | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950 | Image | uum_map_rr |
| 209 |  | Anasazi storage cists [1] | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950 | Image | uum_map_rr |
| 210 |  | Anasazi storage cists [2] | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950 | Image | uum_map_rr |
| 211 |  | Anasazi storage cists [3] | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950 | Image | uum_map_rr |
| 212 |  | Anasazi storage cists [4] | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950 | Image | uum_map_rr |
| 213 |  | Anasazi storage cists [5] | 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950 | Image | uum_map_rr |
| 214 |  | Animas hydroelectric system, Colorado [01] | 1911-10-15 | Image | uum_map |
| 215 |  | Animas hydroelectric system, Colorado [02] | 1911-10-15 | Image | uum_map |
| 216 |  | Animas hydroelectric system, Colorado [03] | 1911-10-15 | Image | uum_map |
| 217 |  | Animas hydroelectric system, Colorado [05] | 1911-10-15 | Image | uum_map |
| 218 |  | Animas hydroelectric system, Colorado [06] | 1911-10-15 | Image | uum_map |
| 219 |  | Animas hydroelectric system, Colorado [07] | 1911-10-15 | Image | uum_map |
| 220 |  | Animas hydroelectric system, Colorado [08] | 1911-10-15 | Image | uum_map |
| 221 |  | Animas hydroelectric system, Colorado [09] | 1915-11 | Image | uum_map |
| 222 |  | Animas hydroelectric system, Colorado [10] | 1911-10-15 | Image | uum_map |
| 223 |  | Animas hydroelectric system, Colorado [38] | 1906 | Image | uum_map |
| 224 |  | Animas River, Durango | 1925 | Image | uum_map_rr |
| 225 |  | Animas River, Durango | 1925 | Image | uum_map_rr |