- Beebe collection of Washington family papers, 1818/1861, bulk 1840/18501
- Early Records of the Mount Vernon Ladies' Association, 1853/1951, bulk 1853/1875536
- Esther Maria Lewis Chapin collection of Washington family documents, 1743/18521
- Financial Records of the Mount Vernon Ladies' Association, 1858/20156
- Geo. Gregory Smart collection of Washington and Mount Vernon ephemera, 1793/201715
- Guest Books and Visitor Registers, 1850/20162
- Harrison H. Dodge Papers, 1816/19364
- Historic ephemera collection, 1796/19867
- Historic manuscript collection, 1601/193318
- Historic map collection, 1675/19711
- Historic newspapers collection, 1757/195751
- Historical Photograph Collection, 1850/201040
- Jane Charlotte Blackburn Washington and John Augustine Washington III correspondence, 1837/18611
- John Augustine Washington III and Eleanor Love Selden correspondence, 1842/186021
- John Augustine Washington III and Mount Vernon Ladies' Association (MVLA) collection, 1834/195717