Civil Aeronautics Board accident report into the crash of a Braniff Airways flight on 8 December 1934 near Columbia, Missouri.
Civil Aeronautics Board, US Department of Commerce
1935-04-15
US Department of Transport Special Collections <a rel="nofollow" class="external autonumber" href="http://specialcollection.dotlibrary.dot.gov/Document?db=DOT-AIRPLANEACCIDENTS&amp;query=(select+3)">[1]</a>