Collection
- Duncan Blanchard Papers, 1789-2003521
- National Organization for Women (NOW), New York State Chapter Records, 1961-2011516
- Michelle Crone Papers, 1927-2000, bulk 1982-1995515
- Civil Service Employees Association, Inc. (CSEA), American Federation of State, County, and Municipal Employees (AFSCME) Local 1000 Records, 1918-2015514
- Hans Staudinger Papers, 1928-1980508
- Ernest Curto Papers, 1944, 1946-1965479
- General Reference Collection, 1828-2015460
- E. Ogden Bush Papers, 1884, 1958-1965453
- Oskar Maria Graf Papers, 1891-1967441
- Greta Hartwig Manschinger and Kurt Manschinger (Ashley Vernon) Papers, 1896-1986439
- Frank J. Becker Papers, 1953-1964, 1974438
- Louis Ismay Papers, 1959-1977425
- Bernard Vonnegut Papers, 1828-1997415
- Raymond and Sara Harris Papers, 1942-2009386
- Hans Natonek Papers, 1918-1964384
- John R. Dunne Papers, 1943-1970384
- City of Newburgh Urban Renewal Collection, 1935-2000382
- Eliot H. Lumbard Papers, 1943-2006372
- Nowicki, Joseph Papers, 1954-1964371
- Arnold Brecht Papers, 1865-1974364