This subseries (2.52 linear feet) is comprised of correspondence, legislation, newspaper clippings, and reports documenting Native Americans' need for education, food, land, legal equality, legal representation and the right to vote. Alaskan, Arizonan, Bosone, Navajo, and Pyramid Lake tribes are well-represented in the earlier years of this subseries.

Correspondence, court documents, newspaper clippings, and reports related to elections and voting rights comprise the materials in this subseries (2.1 linear feet). Such issues as the required number of signatures for a new party to be recognized; the rights of minority parties (such as the Progressive Party, Socialist Party or Christian Nationalist Party) to partake in the election process; discussions of the laws concerning United States citizens and foreign elections; and election laws in general are detailed. One topic covered in great detail is reapportionment: there are many discussions of legislation related to the Supreme Court's ruling ( Baker v. Carr) requiring state legislatures to apportion their representation on the basis of population.

The International Civil Liberties subseries (19 linear feet) contains press releases, correspondence with officials like General Douglas MacArthur, and reports on censorship, labor laws and U.S. policy. Much of this material attests to Roger Baldwin's personal interest in international civil liberties during this period.

This subseries consists of a variety of material gathered together by the ACLU as "miscellaneous" and of material placed under that heading by the processors of this project. It includes correspondence, memoranda, manuscripts, press releases, clippings, articles, legal documents, and bail bonds and is arranged chronologically. It includes materials on presidential elections from 1948 to 1964 and on election and campaign reform including statements and testimony by members of the ACLU and also questionnaires of candidate's views on civil liberties issues; information on municipal and state ordinances as well as a book of cancelled bail bonds from 1927-1931, showing the grassroots legal efforts of the ACLU to defend the rights of those associated with unpopular organizations; yearly compilations of "Descriptive Summaries of ACLU Case Actions Taken in Defense of Civil Liberties" (1946-1953); "Reference Books" compiled by the staff of the ACLU (1921-1946) containing memoranda of law and summary reports related to various civil liberties issues; information on films and television programs about civil liberties, such as "Inherit the Wind" and a television program on Sacco and Vanzetti; and manuscripts relating to civil liberties topics written by staffers of the ACLU and also by those outside the organization and submitted to the ACLU for approval or editorial comment. There are also a few files containing correspondence from the 1940s and 1950s which was at that time considered "confidential" and a "Survey of Communist-Oriented Organizations and Publications" compiled at the request of Roger Baldwin in 1946.

Founded in the summer of 1964 to assist the civil rights movement, the Lawyers Constitutional Defense Committee (LCDC) solicited lawyers to provide volunteer legal representation for worthy or significant cases. Typically, a volunteer lawyer would travel to a small town in the South and spend one month working on cases in coordination with one of the LCDC's regional offices. While these regional offices handled case work locally, the headquarters in New York handled lawyer solicitation, fundraising, publicity, and other general activities. In December 1967, the LCDC was merged into the Roger Baldwin Foundation (the tax-exempt arm of the ACLU) becoming the LCDC project of the Foundation. As the civil rights movement grew in popularity, the LCDC's practical and ideological goals were met by other organizations, most notably the United States Justice Department.