| | Title | Date | Type |
|---|
| 351 |  | Rick Majerus | | Image/MovingImage; Sound |
| 352 |  | Ritmo Jondo; Stationary Flying. Repertory Dance Theatre collection | 1973 | Image/MovingImage |
| 353 |  | Riverways of Rapidsmen part I. Joseph Desloge collection | 1967 | Image/MovingImage |
| 354 |  | Riverways of Rapidsmen part II. Joseph Desloge collection | 1967 | Image/MovingImage |
| 355 |  | Robert Baldwin, Salt Lake City, UT: Uranium Oral Histories | 1970-07-30 | Sound |
| 356 | | Robert Blanc, Costa Mesa, CA: Uranium Oral Histories | 1970-08 | Sound |
| 357 | | Robert G. Beverly, Grand Junction, CO: Uranium Oral Histories | 1970-07-21 | Sound |
| 358 | | Robert Pruitt, Salt Lake City, UT: Uranium Oral Histories | 1970-07-30 | Sound |
| 359 |  | Robert Redford, Between Takes | 1978; 1979 | Image/MovingImage; Sound |
| 360 | | Robert S. Palmer, Denver, CO: Uranium Oral Histories | 1970-07-26 | Sound |
| 361 | | Robert Sundwall, Moab, UT: Uranium Oral Histories | 1970-07-20 | Sound |
| 362 | | Robert V. Hancock, Blanding, UT: Uranium Oral Histories | 1970-08-06 | Sound |
| 363 | | Rock Canyon Preservation. Save Our Canyons collection | 2010 | Sound |
| 364 | | Ronald Anderson, La Habra, CA: Uranium Oral Histories | 1970-09-30 | Sound |
| 365 | | Ruth M. Quackenbush, Uravan, CO: Uranium Oral Histories | 1972-08-03 | Sound |
| 366 | | S. A. Mayer, Grand Junction, CO: Uranium Oral Histories | 1970-07-21 | Sound |
| 367 | | S. L. Lake, Golden, CO: Uranium Oral Histories | 1970-07-25 | Sound |
| 368 | | Samuel Taylor, Moab, UT: Uranium Oral Histories | 1970-07-23 | Sound |
| 369 |  | Save Gilgal Garden. Friends of Gilgal Garden collection | | Image/MovingImage |
| 370 | | Scientist and journalist Eugene Mallove | 1989; 1990; 1991; 1992; 1993; 1994 | Sound |
| 371 |  | Sculptured Earth, part 1. Charles Eggert collection | 1962 | Image/MovingImage |
| 372 |  | Sculptured Earth, part 2. Charles Eggert collection | 1962 | Image/MovingImage |
| 373 | | Seth Shumway, Blanding, UT: Uranium Oral Histories | 1970-08-06 | Sound |
| 374 |  | SG Highlights 2002-2003 | 2002; 2003 | Image/MovingImage |
| 375 | | Sigird Hendricksen, Los Angeles, CA: Uranium Oral Histories | 1970-06-24 | Sound |
