Correspondence, memoranda, speeches, writings, briefing books, notes, office files, subject files, printed matter, scrapbooks, photographs, and other papers documenting Haig's service as military advisor to Henry Kissinger at the National Security Council, deputy assistant to President Richard M. Nixon for national security affairs, vice chief of staff of the U.S. Army, chief of Nixon's White House staff, Supreme Allied Commander Europe (SACEUR), and U.S. secretary of state in the Ronald Reagan presidential administration.

Subjects include the military and political situation in Southeast Asia and the war and negotiations for peace in Vietnam; the economy, energy crisis, corruption charges against Vice President Spiro T. Agnew, Nixon's personal finances, relations with the Soviet Union, and other issues facing the Nixon administration; White House ramifications of the Watergate affair and the transition period of the presidency of Gerald R. Ford; and Haig's contemplation of candidacy for political office in 1979. Other subjects include arms control; the political situation in Yemen, Zaire, and Iran; conflict between Turkey and Greece; long term defense capabilties; and other NATO concerns. Subjects also include international terrorism, hostages in Lebanon, arms sales, communist influence in Nicaragua and El Salvador, the rise of the Polish trade union Solidarity (NSZZ "Solidarność"), the Falkland Islands crisis, Philip Charles Habib's 1981 Middle East mission and Palestinian autonomy, and other aspects of Haig's State Dept. tenure. Includes files of Haig's State Dept. executive assistant, Sherwood D. Goldberg; of Robert L. Brown, State Dept. political adviser for international affairs; and of Haig's political analyst and speechwriter, Harvey Sicherman.

Correspondents include David M. Abshire, Menachem Begin, Leonid Brezhnev, Harold Brown, Robert L. Brown, Frank C. Carlucci, Peter Alexander Rupert Carington (Baron Carrington), William J. Casey, William P. Clark, Archibald Cox, Ioannis Davos, Charles W. Dyke, Robert E. Harper, George A. Joulwan, Richard T. Kennedy, William A. Knowlton, Robert W. Komer, David A. Korn, Joseph M.A.H. Luns, John G. Pappageorge, Francis Pym, Elliot L. Richardson, Semih Sancar, Brent Scowcroft, Harold E. Shear, Stansfield Turner, Caspar W. Weinberger, and Herbert F. Zeiner-Gundersen.