Collection
- Esther Newton Papers, 1866-2018 (majority within 1963-2014)32
- Eva Langbord Emma Goldman Papers, 1934-19852
- Federico Arcos Papers, 1931-20157
- Fifth Estate Records, 1967-2016 (majority within 1982-1999)13
- Franklin and Penelope Rosemont papers, 1950-2012 (majority within 1960-2009)156
- George Salzman Papers, 1969-2017 (majority within 1990-2008)2
- Greek Anti-Junta Struggle collection, 1949-1995 (bulk dates 1967-1974)55
- Greg Calvert Papers, 1920-2000 (majority within 1960-1992)13
- Hobohemia Collection, 1905-19971
- Human Rights Party Papers, October 1948 - May 1997 (majority within 1977-1986)8
- Isaac E. Ronch Papers, 1902-2020 (majority within 1940-1971)6
- J. Louis Engdahl Papers, 1885-1981 (majority within 1912-1932)2
- James Herod Papers, 1968-20072
- Jean Fagan Yellin/Harriet Jacobs Research Collection, 1855-2017 (majority within 1968-2010)15
- Jon Bekken papers, 1985-20161
- Kay Boyle (Cambodia) papers, 1966-19801
- Laurance Labadie Papers, 1882-19733
- Lionel Biron Papers, 1970s-2010s1
- Lon G. Nungesser Hope for Humanity Papers, 1970-19891
- Lotta Continua Papers, 1970-19771