I was very happy to return from the Soviet Union to find your name on the list of top distributors in every North American newsletter published since I left United States in early July. I want to tell you how much this inspires me in my preaching. By your steady endeavor to distribute Srila Prabhupada's books, I'm reminded that I must remain steady in my endeavor to encourage others to take up this most important mission. In this way, you are helping me in my service to Srila Prabhupada.
Collected Letters: Volume 2, Preaching and Book Distribution.