Office of Emergency Management (OEM) represents the bulk of the material in this subseries. This sub-subseries contains orders from a number of offices established under the Office of Emergency Management produced primarily between 1943 and 1947. The War Production Board was established under the Office of Emergency Management in 1942 and directed federal war procurement and production programs. It was succeeded by the Civilian Production Administration in 1945-1946. The Civilian Production Administration was liquidated by the Department of Commerce in 1947. The Department of Commerce went on to establish the National Production Authority in 1950. The National Production Authority, like the War Production Board, promoted production of materials for military defense. Although the OEM was abolished by 1944, a decision was made to keep all of the materials connected to the original War Production Board in this sub-subseries since the same individual, who seems to have been connected with all three organizations, donated all but 36 of the folders in this sub-subseries to the collection. While an effort has been made to eliminate duplicates within the sub-subseries, many of the orders represent amendments to or revocations of previous orders, so orders with the same identification number often appear multiple times in this section of the collection.