- Garnie Walker Testa Papers and Walker-Testa Family Genealogy, 1878/20251
- Gary Weiner, Collector, Clarksburg Historical Records, 1850/2006, bulk 1870/200029
- George Mason University Libraries records2
- George Washington National Forest oral histories, 19941
- Gitchell's Studio collection (accession 2017-0077), 1972/2016, bulk 1990/2014196
- Glass Lantern Slide Collection2
- Glen H. Hiner, Jr. Papers, 1923/201611
- Grace Martin Taylor, Artist, Papers, 1904/20199
- Greenland Thompson Federer Papers, 1911/1950, bulk 1917/19254
- Gump and Myres Families Papers, 1839/19452