Collection
- Leonard Kastle Papers, 1940-1996556
- Duncan Blanchard Papers, 1789-2003543
- National Organization for Women (NOW), New York State Chapter Records, 1961-2011532
- Civil Service Employees Association, Inc. (CSEA), American Federation of State, County, and Municipal Employees (AFSCME) Local 1000 Records, 1918-2015528
- Michelle Crone Papers, 1927-2000, bulk 1982-1995515
- Hans Staudinger Papers, 1928-1980510
- Paul Hanks Papers, 1944-1966, Undated510
- E. Ogden Bush Papers, 1884, 1958-1965507
- General Reference Collection, 1828-2015473
- Oskar Maria Graf Papers, 1891-1967473
- Ernest Curto Papers, 1944, 1946-1965468
- Greta Hartwig Manschinger and Kurt Manschinger (Ashley Vernon) Papers, 1896-1986442
- Bernard Vonnegut Papers, 1828-1997430
- Louis Ismay Papers, 1959-1977428
- City of Newburgh Urban Renewal Collection, 1935-2000420
- Leonard Farbstein Papers, 1955-1970417
- Nowicki, Joseph Papers, 1954-1964403
- Eliot H. Lumbard Papers, 1943-2006402
- Raymond and Sara Harris Papers, 1942-2009402
- William Kennedy Papers, 1926-2003387