- Beebe collection of Washington family papers, 1818/1861, bulk 1840/18501
- Bushrod Washington family papers, 1662/18351
- Elizabeth Bordley Gibson collection, 1794/18511
- Esther Maria Lewis Chapin collection of Washington family documents, 1743/18521
- Geo. Gregory Smart collection of Washington and Mount Vernon ephemera, 1793/20171
- Harrison H. Dodge Papers, 1816/19361
- Historic ephemera collection, 1796/19861
- Historic manuscript collection, 1601/19331
- Historic map collection, 1675/19711
- Historic newspapers collection, 1757/19571
- John Augustine Washington III and family papers, 1789/19941
- Lawrence Lewis family papers, 1785/18581
- Lawrence Washington collection of Washington family papers, 1787/19321
- Morley Jeffers Williams Collection, 1602/19671
- Peter family papers, 1722/19321