Bureau of Air Commerce (U.S. Department of Commerce) report into the accident investigation of the crash of a Southern Airlines airliner on 28 May 1935
Civil Aeronautics Bureau
1935
National Transportation Library, U.S. Department of Transportation. <a rel="nofollow" class="external free" href="https://rosap.ntl.bts.gov">https://rosap.ntl.bts.gov</a>