2019-05-202019-05-201939-11-15https://repository.tcu.edu/handle/116099117/25544Letter from W. A. Patterson to all employees of American Airlines regarding Air Mail Service from Cleveland. Mr. Patterson is concerned about the developments from American Airlines encroaching on United Air Mail routes.8.5 x 11 PaperPrior written permission from TCU Special Collections required to use any document or photographAmerican AirlinesAviationFort Worth, TXDocument