A group of seven photographs and letters signed or secretarially signed by President Herbert Hoover to Stanley Arnold: two are photographs, one with a letter attached on verso, and five are typed, signed letters on Hoover's stationery from 1934, 1957, 1958, and 1963. The letter dated April 24, 1934, suggests that Arnold has been "hounding the President" (at the time, Franklin D. Roosevelt) and reads in part, "[W]hat you are trying to do is to set up the fraud of an appearance of importance when in your own statement all you are trying to do is to win a bet."

Largest, 14 3/4 by 12 1/2 inches