The following is a composite of the major works and sources used by the various authors in their individual chapters.
The vast majority of documents are still found at their original sources. Among these sources are the Departments of State and Defense. Other government records were gleaned from the U.S. Senate and House of Representatives, including the Committees on Foreign Affairs, Armed Services, and the various subcommittees. In addition, the immense numbers of military records have been derived from such agencies as the Departments of the Army, Navy, and Air Force as well as from the Joint Chiefs of Staff. Other sources for documents included the National Archives in Washington, D.C.; the Eisenhower and Johnson presidential libraries; army archival holdings at Carlisle Barracks, Pennsylvania, and the Center for Military History (CMH) in Washington, D.C.; and air force archival holdings at the Air Force Historical Research Agency at Maxwell Air Force Base, Alabama. Among the items used by the authors were situation reports; after-action reports; site team reports; mission reports from various military units; background reports; command-service- and secretary-level briefings; letters of various kinds; telephone transcripts; meeting minutes of various kinds; statements before Congress and other government agencies; public speeches; press releases from official agencies; transcripts of congressional testimony; author interviews with key figures--of note are Cecil Currey's numerous personal interviews and correspondence with Senior General Vo Nguyen Giap; citations from various war monuments in Vietnam and the United States; and microfilm copies of significant document collections.
Among the specific papers and holdings examined were Tom Johnson Meeting notes; Tom Johnson Notes; National Security Council History; Papers of Clark Clifford; Lyndon Baines Johnson Presidential and Personal Papers--including the