- George Washington collection, 1654/17991,016
- George Washington's Mount Vernon Magazine, 201524
- Guest Books and Visitor Registers, 1850/201635
- Harrison H. Dodge Papers, 1816/193666
- Historic ephemera collection, 1796/198688
- Historic manuscript collection, 1601/19331,913
- Historic map collection, 1675/197124
- Historic newspapers collection, 1757/19571,314
- Historical Photograph Collection, 1850/20103,770
- Jane Charlotte Blackburn Washington and John Augustine Washington III correspondence, 1837/1861169
- John Augustine Washington III and Eleanor Love Selden correspondence, 1842/1860173
- John Augustine Washington III and Mount Vernon Ladies' Association (MVLA) collection, 1834/1957252
- John Augustine Washington III and family papers, 1789/1994484
- Justin Glenn collection of Washington family genealogy, 2013/2018181
- Kellogg Foundation Files, Farm Project, 1984/19997