First edition: New York: Looking Glass Library [1959]. White wrappers with red, blue, yellow, and black pictorial stamping. Limited to 600 copies. "First edition" on copyright page.

First trade edition: New York: Epstein & Carroll, 1960. White boards with red, bluish-green, yellow, and black pictorial stamping with pictorial dust wrapper. No statement of first edition.

Serious Collector Link: search for first or limited editions