Vintage, one-page handwritten letter to William H. Decker Jr. in bold fountain pen.  The hurler writes, "I have published a book on How To Pitch and same can be had by sending 25 cents to the Atlantan Hotel in care of Rube Marquard.  It is a wonderful book for a youngster who is learning to pitch."  Written on Atlantan Hotel letterhead and mounted to a cardboard backing, condition is EX-NRMT with a nearly perfect signature. Comes with the actual book he is trying to sell from his hotel room!!! Comes with fine example of the actual book/booklet, "How to Pitch by Rube Marquard" ©1932 (5x8").