This letter was written by Joseph Hickox to Laurence D. Peabody, a member of the U.S. Army stationed in Germany at the time and the son of Hickox's friend George W. Peabody. Hickox writes about Albert Einstein's trip to Mt. Wilson in the 1930s. He describes conversations they had, how he and Einstein would play pool, a practical application of the Theory of Relativity, and Einstein's interest in astronomy.