The Banks and Banking series is largely composed of financial statistics and reports issued by individual banks operating in Japan, many of them to the Financial Minister regarding a reorganization program. The series also contains memoranda, papers, and reports about banking in Japan, some of which are authored by divisions of the Economic and Scientific Section, GHQ-SCAP.

The Economic Subject Files series contains materials collected by Beplat about the economy of Japan. Some are authored by divisions of the Economic and Scientific Section, GHQ-SCAP, while others are authored by Japanese banks and organizations. The materials include reports, memoranda, and statistics on Japan's economy, government finances, trade, and the foreign exchange rate of the yen, as well as copies of potential legislation regarding banking and finance and related memoranda and reports analyzing these laws.

Series 4 Finding Aid: American Civil Liberties Union Records: Legal Case Files Series, 1933-1990.

Series 6 Finding Aid: American Civil Liberties Union Records: Audiovisual Materials Series, circa 1920-1995.

The U.S. Military Series is largely composed of Fuller's personal correspondence with friends and family, notably his wife Georgia, discussing his experiences in the military and their daily lives. The series also includes his diaries from this period, memoranda Fuller wrote to headquarters about the merits of fellow servicemen for promotions, military business correspondence, papers that Fuller translated into English for the military, informational memoranda on military procedures and tactics, and negatives of pictures Fuller took of war devastated eastern Europe. Also included is correspondence related to Fuller searching for employment after he was discharged from the military and papers related to his company, Bodkin Research Manufacturing Co., Inc.

The Biographical and Personal series consists of approximately 0.5 linear feet of material and includes biographical information, as well as material related to Kirkpatrick's time at Princeton University and other non-professional activities. Of special note is a 185-page biography compiled by Kirkpatrick's wife Rita, which makes use of documents found elsewhere in the collection. The majority of correspondence found in the series is a group of photocopies of letters compiled by Kirkpatrick's wife Rita into a "significant signatures file." The file includes correspondence from U.S. presidents and vice presidents, senators and representatives, and military officers including Omar Bradley. The vast majority of the correspondence in the Significant Signatures File is brief and insubstantial; many of the letters are holiday greetings, invitations, or congratulations on Kirkpatrick's retirement from the CIA or Brown University. There is some correspondence related to Kirkpatrick's intelligence career, including a brief letter in which newly appointed Director of Central Intelligence George H.W. Bush comments on the struggles ahead of him. The series also includes a small folder of photographs, primarily of Kirkpatrick during his military service and years with the CIA.

The World War II series documents Kirkpatrick's service in the Office of Strategic Services and U.S. Army during World War II. Approximately half of the series consists of reports and studies on the activities of the German army and General Omar Bradley's 12th Army Group. Kirkpatrick wrote at least one of the studies ("Destruction of the German Armies in Western Europe, June 6, 1944 - May 9, 1945"). Other highlights in the series include a group of progress reports and daily summaries which appear to have been written by Kirkpatrick during his time in the OSS, the text of a Kirkpatrick speech which appears to have been broadcast to the United States on V-E Day, and photocopies of Kirkpatrick's personnel records.

The Writings series consists of correspondence, notes, and other material related to Kirkpatrick's three books, numerous book reviews, and other published and unpublished writing. Most of the material related to Kirkpatrick's books consists of correspondence, book reviews, and administrative material, rather than drafts of the actual works. Text and drafts of shorter articles and Encyclopedia Britannica entries are included, however. The majority of the material in the series was written during Kirkpatrick's time as a political science professor at Brown University, and concerns foreign policy and intelligence subjects.