The bulk of the William W. Lockwood Papers relate to the American Institute of Pacific Relations (IPR). These papers specifically document the IPR and Lockwood's activities within the IPR during the McCarthy era, and include minutes, correspondence, conference reports and IPR research projects and publications. A significant amount of the IPR papers concern the investigation of the IPR by Senator Joseph McCarthy and Senator Pat McCarran and the subsequent 1952 Senate Judiciary Subcommittee hearings on the alleged Communist activities of the organization and some of its members. The collection also documents Lockwood's interests and involvements in U.S.-Far East relations, as well as his research and study of U.S.-Japanese trade and the Japanese textile industry. Also included are a small number of personal items, dealing primarily with his service in World War II and his involvement in the Amerasia case, as well as Lockwood's FBI file.