| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 426 |
 | Mormon Trail--Scenery-Myer's Crossing P.1 | 1936 | Image | dha_cp |
| 427 |
 | Mormon Trail--Scenery-South Pass P.1 | Image | dha_cp | |
| 428 |
 | Mormon Trail--Scenery-South Pass P.2 | 1934 | Image | dha_cp |
| 429 |
 | Mormon Trail--Scenery-The Needles P.1 | Image | dha_cp | |
| 430 |
 | Mormon Trail--Scenery-The Needles P.2 | Image | dha_cp | |
| 431 |
 | Mormon Trail--Scenery-The Needles P.3 | Image | dha_cp | |
| 432 |
 | Morning Glory Pool | 1909-08-16 | Image | dha_scp |
| 433 |
 | Mortar Geyser - Upper Basin | 1908-08 | Image | dha_scp |
| 434 |
 | Mountain in the Teton Range of the Rocky Mountains and Jenny Lake | 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970 | Image | uum_map |
| 435 |
 | Mountain landscape with cabin | 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; 1970 | Image | uum_map |
| 436 |
 | Mr. and Mrs. Clark, Swan Lake, Yellowstone | 1915-09-03 | Image | dha_scp |
| 437 |
 | Mr. Clark - Swan Lake Camp | 1909-09 | Image | dha_scp |
| 438 |
 | Name Inscriptions--Sublette Cutoff P.1 | 1933 | Image | dha_cp |
| 439 |
 | Name Inscriptions--Sublette Cutoff P.2 | Image | dha_cp | |
| 440 |
 | Name Inscriptions--Sublette Cutoff P.3 | 1933 | Image | dha_cp |
| 441 |
 | Name Inscriptions--Sublette Cutoff P.4 | 1933 | Image | dha_cp |
| 442 |
 | Name Inscriptions--Sublette Cutoff P.5 | Image | dha_cp | |
| 443 |
 | National Park Trademark, Hayden Valley | 1909-09 | Image | dha_scp |
| 444 |
 | Natural Bridge | 1908-08-17 | Image | dha_scp |
| 445 |
 | Near Marshall Place Looking South | 1908-07-16 | Image | dha_scp |
| 446 |
 | New Barn at Swan Lake Camp | 1909-09 | Image | dha_scp |
| 447 |
 | Nolan, Mary | 1890-07-16 | Image | dc_bpc |
| 448 |
 | Office and People at Canyon Camp | 1909-09 | Image | dha_scp |
| 449 |
 | Office, Swan Lake | 1911-08 | Image | dha_scp |
| 450 |
 | Offices, Canyon Camp, Interior | 1911-08 | Image | dha_scp |