Thornton, William M.D.2018-05-242018-05-241961-09-18http://hdl.handle.net/2152.3/8834Correspondence from Dr. William Thornton to John Hickam, M.D. regarding the purchase of a Tanberg recorder and other equipment.Dr. William ThorntonJohn Hickam, M.D.Tanberg recorderPreNASAUSAFUnited States Air Force