The Regional Offices series documents the work and administration of the ACLU's three regional offices: Mountain States Regional Office, concerned with civil rights in the west and Native American rights, the Southern Regional Office, focusing on civil rights in the south, and the Washington, D.C. office, which concentrates on national legislation and the actions of the federal government. The files include correspondence, case files, office publications, research files, and the papers of individual staff members. Subgroup 3, Subseries 5B (Southern Regional Office) has been digitized and is available for members of the Princeton community to view here. To view the database from outside Princeton University, please see the Guide to the American Civil Liberties Union Records.

The papers consist primarily of records maintained in William Fitts Ryan's congressional office in Washington, D.C. his district office in New York City, and campaign materials.

Don Oberdorfer (1931-2015) worked as a journalist for nearly four decades; twenty-five of those years were as a staff member at the Washington Post, where he served as White House correspondent (1968-1972), Northeast Asia correspondent (1972-1975), and diplomatic correspondent (1976-1993). The collection is mostly composed of Oberdorfer's notebooks that chronicle his assignments with the Post, as well as his work post-retirement. The collection also consists of transcripts of interviews conducted by Oberdorfer with both American and Soviet foreign policy officials for his book The Turn: From the Cold War to a New Era, The United States and the Soviet Union, 1983-1990 (Poseidon Press, 1991, and Touchstone Press, 1992). Additionally, the papers contain a significant amount of research material and writings related to Oberdorfer's career, foreign policy actions taken by the United States and the Soviet Union at the end of the Cold War, and the political climate of Japan and Korea from the late 1960s into the early twenty-first century.

The William P. Bundy Papers document Bundy's career in public service, including Deputy Assistant Secretary of Defense for International Security Affairs; Assistant Secretary of Defense for International Security Affairs; Assistant Secretary of State for East Asian and Pacific Affairs, and editor of Foreign Affairs. Additionally, the collection consists of correspondence and subject files for Bundy's 1998 book, A Tangled Web: The Making of Foreign Policy in the Nixon Presidency.

Harold Raymond Medina (1888-1990) was a noted jurist, Princeton alumnus, and creator of a New York State Bar preparation course. This collection includes legal records, personal and professional correspondence, photographs, audio recordings, and teaching materials; in aggregate, they offer a substantial record of Medina's life and work.

Harry Dexter White (1892-1948) was an economist with expertise in international finance and monetary issues. White served in the United States Department of the Treasury from 1934 to 1946, rising to the position of Assistant Secretary of the Treasury, and was one of the principal architects of the Bretton Woods agreements in 1944 that established the International Monetary Fund and the World Bank. White's papers document his service in the Department of the Treasury and include correspondence and memoranda, notes, and writings.

The Veerni Project is a non-governmental organization based in Jodhpur, Rajasthan, India, which provides secondary education and boarding hostels for girls from rural villages in the Thar Desert region. The collection documents the organization's operations, including funding, programming, administration, outreach, and impact.

The organization that became Americans United for Separation of Church and State was founded in 1947 to protect church-state separation and religious freedom, as well as to educate lawmakers, religious leaders, and the general public regarding Constitutional religious liberties. The records document the administration and issues of the organization from its founding and include correspondence, meeting materials, and publications.

The Papers of Woodrow Wilson Project, co-sponsored by the Woodrow Wilson Foundation and Princeton University, was a successful project to publish material generated by and influencing Woodrow Wilson; the 35 year project resulted in an acclaimed 69 volume set. The records of the Papers of Woodrow Wilson Project, compiled by chief editor Arthur S. Link and his staff, document the life and times of the former Princeton University president, governor of New Jersey, and president of the United States, Woodrow Wilson, as well as the project to bring together documentation by and about Wilson.

William E. Colby, Princeton University Class of 1940, was a career agent in the Central Intelligence Agency (CIA) and Director of Central Intelligence from 1973-1976. However, the bulk of the collection documents his post-CIA career and contains correspondence, speeches, writings, newspaper clippings, and subject files that reflect Colby's professional and private interests.