From the Margret and Hans Augusto Rey Papers .; Curious George's 50th Birthday invitation (including balloon), sponsored by Houghton Mifflin on May 9, 1991. First image is 5.5" x 7.5" and the second image is 7.5" x 10.5."
From the Margret and Hans Augusto Rey Papers. Illustrations of Curious George swinging on a vine in a tree. Framed original charcoal, color pencil, and watercolor illustration for p. 5 of Curious George by H.A. Rey (Boston: Houghton Mifflin, 1941).