Correspondence, manuscripts, notes, drafts of speeches, appointment books, subject files, documents, photographs, memorabilia and printed materials. There are notes from her lectures on Sociology at Adelphi College in 1911-1912; papers from 1912-1932, when Perkins served on the Commission for Safety and on the Industrial Commission of New York State; the main body of the material is from the period of her cabinet office, 1933-1945; and some items from her days on the Civil Service Commission, 1946-1953. Also included are personal and family papers.

This collection documents the personal and political life of Herbert H. Lehman, who served as lieutenant governor, governor, and senator of New York, and as director-general of the United Nations Relief and Rehabilitation Administration.

Julius Caesar Claude Edelstein (1912-2005), served as advisor and executive assistant to military officials and political figures. His papers primarily encompass his job as executive assistant and chief of legislative staff to Senator Herbert H. Lehman during Lehman's senatorial years 1949-1956. Edelstein remained executive assistant to former senator Lehman from 1957-1960. His files include correspondence, memoranda, press releases, clippings, speeches, statistics, maps, pamphlets and government publications.Julius Caesar Claude Edelstein (1912-2005), served as advisor and executive assistant to military officials and political figures. His papers primarily encompass his job as executive assistant and chief of legislative staff to Senator Herbert H. Lehman during Lehman's senatorial years 1949-1956. Edelstein remained executive assistant to former senator Lehman from 1957-1960. His files include correspondence, memoranda, press releases, clippings, speeches, statistics, maps, pamphlets and government publications..

The collection contains the papers of William B. Welsh, who served as a research and legislative assistant to Herbert H. Lehman when he was a New York senator.

Correspondence, minutes, notes, memos, and pamphlets documenting the National Committee on Immigration and Citizenship's pro-immigration efforts in the early 1950s.