TLS, one page, 7.25 x 9.5, Federal Bureau of Investigation letterhead, September 1, 1937. Letter to Mr. Louis Sobol of the New York Evening Journal. In part: “I returned to the office this morning and was greatly pleased to receive your autographed photograph. I have always been anxious to have a photograph of you, and shall certainly treasure this one more because of the autograph which you placed upon it…I have such a good friend in one who has such faith in what we are trying to do….” In fine condition, with faint paper clip impression to upper left corner. RR Auction COA.