A letter addressed to Mr. H. W. Siddall, Chairman, Rail Travel Promotion Agency, Chicago 6, Illinois, from T. N. Carswell, dated September 19, 1947. Carswell references a letter from Siddall dated July 25, 1947 regarding membership requirements. Carswell confirms he very much desires to hold his RTPA contract, even as a Class P tourist agent.

A letter written to Mr. T. N. Carswell, Carswell Agency, Abilene, Texas, from H. W. Siddall, Chairman, Rail Travel Promotion Agency, Chicago 6, Illinois, dated July 25, 1947. Siddall refers to a notation on his Bulletin of June 19, 1947 concerning Carswell returning RTPA purchase orders to him listing four scenarios that will determine the course of action to be taken by Carswell.

A letter written to Mr. T. N. Carswell, Parramore Post No. 57, American Legion, Abilene, Texas, from D. A. Murray, Assistant Secretary, Chicago Tribune, dated November 29, 1941. Murray advises that the letter from Carswell was received in Colonel McCormick's absence and gives his assurance that it will be brought to McCormick's attention immediately upon his return.

A letter written to Mr. T. N. Carswell, American Legion, Abilene, Texas, from Paul Scott Mowrer, Editor, The Chicago Daily News dated November 26, 1941. Paul Scott Mowrer defines Americanism.