Vols. for 1924-Apr. 1943 published by the North Carolina Historical Commission; July 1943-spring 1972 by the State Dept. of Archives and History; summer 1972- by the Office of Archives and History; by the Division of Archives and History.
"August 23, 2013."; Includes bibliographical references.; Performed by Highway Safety Research Center, University of North Carolina, sponsored by North Carolina Department of Transportation, Research and Development