Published annually by the State Department, Foreign Relations of the United States (FRUS) is the official record of major declassified U.S. foreign policy decisions and diplomatic activity. Material, including transcripts of tape recordings, comes from Presidential libraries and executive departments and agencies. Digitized material does not reflect the full range of the published volumes. Documents included have been selected for their ability to illuminate "policy formulation and major aspects and repercussions of its execution."

The first website covers the years from 1861 to 1960. Each volume of more than 500 pages contains an annual message from the President, a list of papers with subjects of correspondence, circulars on subjects such as sanitation and conservation, and chapters dedicated to individual nations. Decisions involve a wide range of topics, including international arbitration and the protection of migratory birds. Visitors may search volumes individually or the whole set by keyword, subject, and date.

The second website offers materials from 1945–1972. Materials come from the Truman, Eisenhower, Kennedy, Johnson, and Nixon administrations. Additional volumes will be added on the Nixon and Ford administrations.

More than 2,500 hours of White House recordings by six American presidents between 1940 and 1973 are available on this website. Presidents include Franklin Roosevelt (eight hours), Harry Truman (10 hours), Dwight Eisenhower (four and a half hours), John Kennedy (193 hours), Lyndon Johnson (550 hours), and Richard Nixon (2,019 hours). A substantial introduction to each set of recordings is provided and edited transcriptions of the Kennedy tapes are available. "From the Headlines" relates current events to the recordings. Eight exhibits with short scholarly essays feature such topics as the Civil Rights Movement, the Vietnam War, Johnson's "War on Poverty," and the Space Race. Additionally, the site presents 16 preselected multimedia clips that include recordings of Kennedy discussing withdrawal from Vietnam, Johnson talking to McNamara about leaks, Johnson discussing women in politics, and Nixon discussing Mark Felt during the Watergate cover-up. The site provides links to more than 40 related articles and links to related presidential libraries, document collections, websites, and articles.