Thompson was a manuscripts collector and dealer in used books in New Orleans. His papers include telegrams from Cedric Gibbons and Rudi Blesh requesting copies of material in his possession. There are also the four following items by or about Thompson: "Complete History of New Orleans Declared Unwritten," clipping from the Times-Picayune (1933 June 11); "Personal Notes from Original Documentary Source Material in My Own Collection..." (1945); emendations by Thompson to P.E. Miller's "Fifty Years of New Orleans Jazz" in Esquire's 1945 Jazz Book; and "Chronological History of the Old French Market" (1950).
