Organized into 3 subseries: Subseries 1, Executive Secretary's Correspondence with State and Defense Council Agencies, 1940-1941, 1 cubic foot; and Subseries 2, Thomas L.J. Corcoran Correspondence Files, 1941-1942, 3 cubic feet, are arranged alphabetically by agency. Subseries 3, Executive Secretaries' Correspondence, 1941-1945, 5 cubic feet, is arranged by topic or individual.