"The Foreign Relations of the United States series presents the official documentary historical record of major US foreign policy decisions and significant diplomatic activity. The series, which is produced by the State Department's Office of the Historian, began in 1861 and now comprises more than 350 individual volumes. The volumes published over the last two decades increasingly contain declassified records from all the foreign affairs agencies." [from the State Dept. website]
American Foreign Policy: Current Documents
"This series presented, on a near-contemporary basis, public foreign policy messages, addresses, statements, interviews, press briefings and conferences, and Congressional testimony."
Department of State Bulletin
"The Bulletin was the official record of U.S. foreign policy. It was established to provide Congress, other agencies, and the public information about U.S. foreign policy and the work of the Department of State and the Foreign Service."
Congressional Serial Set
The United States Congressional Serial Set is the official collection of reports, hearings, and other documents requested by or generated by Congress.
Use the CIS U.S. Serial Set Index (Government Documents Reference - 2nd Level North - Z1223.Z9 C65 1975) to get this information. The Serial Set is arranged first by Congress, then alphabetically by subject/keywords. Each entry will contain the information you need to locate the document.
ProQuest Congressional is a database that contains Congressional hearings, committee reports, bills, selected committee prints, public laws, legislative histories, Congressional Record, Congressional voting records, and other Congressional documents.