- My Lai Massacre, Vietnam, 19681
- Natural gas--United States.1
- New York (N.Y.)--History--1951-1
- Nicaragua--Politics and government--1979-1990.1
- Nixon, Richard M. (Richard Milhous), 1913-1994--Impeachment1
- Obscenity (Law)--United States1
- Organization of Petroleum Exporting Countries.1
- Ortega, Daniel.1
- Pornography--Law and legislation--United States1
- Protest movements--Washington (D.C.)--History--20th century.1
- Public lands--Alaska.1
- Qaddafi, Muammar.1
- Riots--Michigan--Detriot--History--20th Century.1
- Romney, George W., 1907-1995.1
- Roosevelt, Franklin D. (Franklin Delano), 1882-1945.1
- Schlesinger, James R.1
- Small business--Government policy--United States.1
- Soviet Union. Treaties, etc. United States, 1972 May 26 (ABM)1
- Tax credits--United States.1
- Tonkin, Gulf of1