New York: Thomas Y. Crowell, 1971.
Hardcover. First edition. Thin quarto. Fine in very good dustwrapper with some tears and age-toning. Signed by the author, "June 1972 With love, Eric Carle," and below it he has drawn a cheerful sun. A nice copy of this children's book, with all of the die-cut pages undamaged and in fine condition.