Collection
- Gaius Dickinson Letters1
- Galt Papers (I)18
- Galt Papers (III)21
- Gamble Papers, Letters and Photographs1
- Garth Family papers5
- Gary Weiner, Collector, Papers1
- Gaspard Monge Portrait Print1
- Genealogy Collection1
- Geo. Gregory Smart collection of Washington and Mount Vernon ephemera5
- George A. Baxter Family papers8
- George Baker Family Genealogy1
- George Couchman Family Papers1
- George Frederick Holmes Papers1
- George Mason Papers2
- George Mason University Student Government records1