Author of the timeless classic, The Wizard of Oz. Exceedingly rare vintage fountain pen signature, “Sincerely yours, L. Frank Baum,” on an off-white 4.75 x 3 slip. In fine condition, with clipped top corners, several light folds, trivially affecting a couple letters of signature and sentiment, a light shade of toning and some mounting remnants to reverse. One of the most sought after literary autographs. COA John Reznikoff/PSA/DNA and R&R COA.
