Code of Federal regulations. Title 22 Foreign Relations Ref KF 70 .A3 (Also online at http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&tpl=/ecfrbrowse/Title22/22tab_02.tpl) United States Government Manual. ref JK 404 .A3
Foreign relations of the United States/ Department of State, United States of America (2 North GovDoc S 1.1 :)Foreign relations of the United States (Online) 1861-1958/1960 [375 vols.]U.S. Department of State-- Office of the Historian Historical Document --Foreign Relations of the United States (1945-1976) The Foreign Relations of the United States (FRUS) series presents the official documentary historical record of major U.S. foreign policy decisions and significant diplomatic activity.
MarciveWeb DOCS: A Catalog of U.S. Government publications, reports, and maps from July 1976 to the present. Government Documents (by Ben Amata, government document librarian)