2022-03-242022-03-241955-04-28https://repository.tcu.edu/handle/116099117/51459Letter from Oswald Ryan, chairman of the United States Civil Aeronautics Board, to Amon Carter regarding his experience in the natural gas industry.8.5x11 PaperPrior written permission from TCU Special Collections required to use any document or photographRyan, OswaldCivil Aeronautics Board (CAB)Document