The Princeton Years series documents Crespi's career prior to joining the USIA . It includes correspondence, research notes, clippings, reports, and published articles relating to Crespi's graduate research at Princeton on gambling addiction, his research on German public opinion of the United States, and other research projects on topics such as such tipping in America and the Kinsey Reports. Also included is correspondence relating to his professorship at Princeton in the psychology department, and his time at UCLA as an undergraduate.

This series documents Crespi's career after joining the USIA in 1954. This series includes USIA reports and related correspondence, notes, and clippings on surveys of foreign and domestic public opinion on a wide range of subjects, including the U.S. economy, trends in political thought, the future of American foreign policy, NATO, U.S. exhibitions on other countries, moral equivalence, phased retirement, and the effectiveness of USIA's own programs and surveys. Surveyed regions include Western and Eastern Europe, the Mideast, Asia, Latin America, and North America. Also included are departmental files of the USIA Office of Research (including service awards and performance evaluations of Crespi), WAPOR newsletters and correspondence, personal correspondence, photographs, biographical sketches of Crespi, drafts of published articles, and notes and related correspondence for various presentations and lectures he conducted over the course of his career. Material in this series that pre-dates 1954 primarily consists of USIA material that Crespi utilized in his research, as well as one report co-authored by Crespi for the office of the U.S. High Commissioner for Germany.

May 2008 Accession consists of correspondence between family members prior to and following Allen Macy Dulles' injury as a Marine lieutenant in the Korean War. Prior to the injury, the correspondence documents Dulles's education and activities at primary school, Phillips Exeter Academy, Princeton University and Oxford University. Following the injury, materials include correspondence to and from Allen Macy Dulles, professional and personal correspondence of Allen Welsh Dulles and the Dulles family, correspondence with doctors regarding Dulles' physical condition, and military records including a citation for the Silver Star Medal which Dulles earned for his wartime leadership and bravery.

This series includes some letters to Frisk Matthews, contains personal and official correspondence with family, friends, researchers and others. The family correspondence includes letters from Matthews mother Bertha Matthews ("Mother Matthews") and exchanges with his wife Elizabeth "Frisk" Luke, his sons Freeman and Thomas, and his parents-in-law "Father and Mother Luke" in Tarrytown, NY. Matthews' letters to Frisk, Freeman Jr., and "Father Luke" include personal insights and observations about political situations and World War II. The correspondence with his wife Frisk after they married is chronologically arranged by the period during which Matthews served in a particular country, while Frisk and the children stayed in Tarrytown for periods of time. During the outbreak of the war and Matthews' service in France, Frisk and the children stayed in Tarrytown as well, apart from a five months trip by Frisk to Vichy (November 26, 1940 to May 10, 1941).

This series includes a few memoranda, addresses and speeches, handwritten notes, and a typescript of the complete third and probably last draft of the memoirs that Matthews published privately under the title "Memoirs of a Passing Era" (circa 1972). According to his foreword, Matthews chose for private publication because he did not wish the memoirs to be subject to a commercial publisher's changes, omissions, or additions. In addition, he wanted the book to be a full account of his life as he remembered it, and to contain his "frank opinion of those, both great and small, with whom I was associated in public life. In a few instances my opinions would be less than complimentary and I have no wish to make them public."

The records in this series are of a miscellaneous nature. In addition to a facsimile copy of The Baltimore American of August 20, 1773, the first two folders contain printed materials and memorabilia on various topics, including the Second World War and subsequent peace conferences. Other records in the series are of a personal nature, and include a typescript diary by Frisk Matthews when she visited her husband in Vichy, France, from November 26, 1940 to March 2, 1942. Matthews quotes the pages from February 6 to her departure in his memoirs (pp 462-481).

The photographs in this section include formal portrait and group photographs, mainly of H. Freeman Matthews and his wife Elizabeth Luke Matthews. The photos include a portrait of Jefferson Caffery, 1934. The miscellaneous photographs include what appears to be a series of photos, taken in April 1941, of staff members of the American Embassy at their temporary location in Vichy. The photographs include Ambassador Leahy, secretaries, and a code clerk. Matthews describes the accommodation at "Villa Ica" where he chose to live himself, in his memoirs (pp 437-438).

This series is mostly composed of photographs taken at events H. Freeman Matthews attended, namely the Potsdam Conference, the Vienna summit meeting between John F. Kennedy and Nikita Khrushchev, and meetings of the Canada-United States Permanent Joint Board on Defense. The series also contains materials related to H. Freeman Matthews's family, including the daybook kept by his wife, Elizabeth Luke "Frisk" Matthews, and correspondence to H. Freeman and Elizabeth, mostly from Matthews's mother, Mrs. Henry C. Matthews, and his sister-in-law, Polly.

Personal correspondence to family and friends. These materials are not in any particular order; many letters remain in original envelopes.

The Bell Laboratories series documents Baker's career at Bell Labs and research undertaken by the lab under his leadership. Areas of research include materials science, polymers, optical fibers, UNIX, systems engineering, and many other technologies. These papers include reports, memoranda, notes, planning documents, and correspondence regarding Bell Labs research projects, as well as articles about the lab and Bell Labs researchers. The series also includes Baker's correspondence, as well as notes on meetings and telephone conversations, with colleagues at universities, other labs, and in government. Major subjects include their research, potentials for collaboration, recent articles and conferences, lab visits, and questions regarding facts and technology, as well as invitations, appreciation for his contributions, and congratulations on promotions and his retirement. Also included are Baker's appointment calendars and weekly schedules, his meeting notes and materials from the Board of Directors and Council meetings, and lab publications and product manuals.

The Biographical series contains materials regarding Baker's career and life and includes articles, interviews and oral histories, his diaries, awards and appointments, family correspondence, photographs, and weekly schedules for his retirement years. The articles include papers written by and about Baker regarding his life, as well as materials collected by A. Michael Noll on three CDs. The earlier diaries include references to his research at Bell Labs, while diaries beginning in the 1950s are predominantly concerned with his daily life. The awards and appointments materials include awards certificates, correspondence about accepted the awards and congratulations, his acceptance speeches, programs, and articles. Most awards are from academic and professional organizations or corporations for his contributions to science, from government agencies for his service, and honorary degrees from universities. The photographs include portraits of Baker, Baker receiving awards, at events, or with members of boards he served on, and personal photographs of unidentified people and landscapes. The weekly schedules record meetings and events that Baker attended, and also include correspondence about the events, itineraries, and expenses.

The Correspondence series spans Baker's entire career at Bell Labs, as well as his advisory work and his retirement. The majority of the correspondence is between Baker and other scientists and scholars discussing recent papers and issues in their fields, as well as invitations to Baker for events and speaking engagements and congratulations to Baker for his various promotions, appointments, and awards. The series also contains correspondence related to his membership and leadership in professional organizations, the management of Bell Labs, correspondence with government officials related to his service on committees and as an advisor, and phone messages taken for Baker.

The Writings series contains copies of Baker's speeches and articles, typically either offprints or photocopies of publications, with the majority written after his retirement from Bell Labs in 1980. Earlier writings, before 1955, were predominantly technical science papers related to his own chemistry research at Bell Labs. Beginning in 1955, his writings were concerned with the overall focus of Bell Lab's research, communications science and technology, the impact of science on business and government, government support for research, and general analyses on conducting scientific research. Beginning in the 1970s, he also frequently wrote about encouraging innovation in research, the role of science and technology in government and society, and the education system, especially in the sciences. After his retirement in 1980, in addition to continuing to write about these subjects, he also wrote about the future of technology and information systems. Baker also wrote about national materials policy periodically throughout his career.