The Arthur and Elizabeth Schlesinger Library on the History of Women in America is a research library at the Radcliffe Institute for Advanced Study, Harvard University. According to Nancy F. Cott, the Carl and Lily Pforzheimer Foundation Director, it is "the largest and most significant repository of documents covering women's lives and activities in the United States." The library is named after Arthur M. Schlesinger, Sr., a noted history professor at Harvard during the 20th century; and his wife Elizabeth Bancroft Schlesinger, a noted feminist.
More information on the Wikipedia page [1].