2022-06-012022-06-011930-10-15https://repository.tcu.edu/handle/116099117/53114Photo of six men. On reverse: "E P Halliburton, Graham B. Grosvenor, F. G. Coburn, Col. Clarence Young Postmaster General Walter F. Brown & Asst. Postmaster General W Irving Glover, Ft Worth Texas Oct. 15, 1930."10x8 PhotoPrior written permission from TCU Special Collections required to use any document or photographAviationImage