TLS, one page, 8 x 10.5, FBI letterhead, August 3, 1967. Letter of thanks to an Oklahoma agent. In part: “I want to commend you for your excellent direction in the investigation of Leroy Dale Hines and Eugene Anthony Nolan, the subjects of an Interstate Transportation in Aid of Racketeering-Gambling case. You afforded this case exemplary on-the-scene supervision, and as a result of your skillful and dedicated efforts, much damaging evidence was obtained which resulted in the successful prosecution of the subjects.” In fine condition, with a few scattered light creases. RRAuction COA.