Hardcover. New York, Harper and Row, reprint, Book: Very Good, Dust Jacket: Poor, Hardcover, illustrated boards with black cloth spine, 32 pages illustrated in 3-colors by Lillian Hoban. Copyright page states 1964 but also has an ISBN which means it's probably early 1970s. Previous owners 2-line notation on inside cover, otherwise clean. Tattered dust jacket included.