Boston: Little, Brown & Co.,1975. Hardcover. First edition. Square octavo. Unpaginated. White cloth boards with black embossing & titles. A very good (+) copy, the boards showing some minor shelf-wear and soiling. Faint gluestains on pastedowns. Unclipped "$4.95" jacket has a small rectangular surface abrasion near the top front tip, two or three internally tape-repaired closed tears, else very good with light rubbing along hinges. A presentable copy of Emberley's playful & disorienting children's book about a "slightly inept wizard" and his op-art conjurations.