Civil Aeronautics Board report into the crash of a Rapid Air Lines flight on 15 November 1934.
Civil Aeronautics Board, US Department of Commerce
1935-03-23
US Department of Transportation Special Collections <a rel="nofollow" class="external autonumber" href="http://specialcollection.dotlibrary.dot.gov/Document?db=DOT-AIRPLANEACCIDENTS&amp;query=(select+6)">[1]</a>