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 de Grummond Children's Books collection. By Clement C. Moore ; with pictures by Jessie Wilcox Smith. Published in Boston and New York by Houghton Mifflin Company, copyright 1912. Illustrated lining-papers.