2014-06-272014-06-271929-082014-06-27http://hdl.handle.net/10735.1/3591Caption on back reads: " Attempted record breaking Endurance flight staged by Burrell in Okla City Aug 29- failed because gas line went thru tail group." Two airplanes in mid-flight refueling line hanging from the upper plane. Image displayed (72 dpi JPEG), Master image (600 dpi TIFF).Tibbs, Burrell (Charles Burrell), 1896-1965Endurance flightsBiplanesAirplanes RefuelingImage5BT-20-5-PB2 Burrell Tibbs atempting endurance flight 1929