- Early Records of the Mount Vernon Ladies' Association, 1853/1951, bulk 1853/1875106
- Esther Maria Lewis Chapin collection of Washington family documents, 1743/18521
- Financial Records of the Mount Vernon Ladies' Association, 1858/20158
- Geo. Gregory Smart collection of Washington and Mount Vernon ephemera, 1793/201718
- Guest Books and Visitor Registers, 1850/20162
- Harrison H. Dodge Papers, 1816/19363
- Historic ephemera collection, 1796/19864
- Historic manuscript collection, 1601/19337
- Historic map collection, 1675/19711
- Historic newspapers collection, 1757/195722
- Historical Photograph Collection, 1850/201036
- John Augustine Washington III and Mount Vernon Ladies' Association (MVLA) collection, 1834/19571
- John Augustine Washington III and family papers, 1789/19946
- Land Records of the MVLA, 1858/20063
- Lawrence Washington collection of Washington family papers, 1787/19322