Emergency preparedness planning functions initially vested in National Security Resources Board (NSRB), established by the National Security Act of 1947 (61 Stat. 499), July 26, 1947, as an independent agency to advise the President on mobilization coordination. NSRB transferred to the Executive Office of the President by Reorganization Plan No. 4 of 1949, effective August 20, 1949, and abolished by Reorganization Plan No. 3 of 1953, effective June 12, 1953, with its functions transferred to the Office of Defense Mobilization (ODM). ODM had been established by EO 10193, December 16, 1950, to direct federal mobilization activities. ODM absorbed functions of the Defense Production Administration, established by EO 10200, January 3, 1951, to exercise general control of the defense production program, and abolished by EO 10433, February 4, 1953. ODM consolidated with the Federal Civil Defense Administration (see RG 397) to form Office of Defense and Civilian Mobilization (ODCM), with responsibility for civil defense and emergency mobilization coordination, by Reorganization Plan No. 1 of 1958, effective July 1, 1958. ODCM renamed Office of Civil and Defense Mobilization (OCDM) by an act of August 26, 1958 (72 Stat. 861). Civil defense functions of OCDM transferred to the Office of the Secretary of Defense by EO 10952, July 20, 1961. OCDM redesignated Office of Emergency Planning (OEP) by an act of September 22, 1961 (75 Stat. 630). OEP coordinated emergency preparedness activities, principally in areas of resource utilization, civil defense, economic stabilization, postattack rehabilitation, and government organization and continuity. Redesignated Office of Emergency Preparedness, 1968. (National Archives, Guide to Federal Records, Records of the Office of Emergency Preparedness, 1995)