ISBN. Hardback. Eleventh Printing. No Dustjacket. Ex-library copy with minimal ex-library markings, card pocket and stamps on the endpapers, white ink dewey decimal number on spine, and a small stamp on the bottom of the title page being it. Tight sound copy with average wear. On the plus side, there is a full page authors inscription and small sketch on the left side of the double title page. It reads HAPPY GREETINGS TO THE BOYS AND GIRLS FROM ELEANOR CAMERON AND TYCO! with a small mushroom sketch below that. There is no edge stamping to the book, so the slight spine ink marking is the only indication of being Ex-lib from an outside view.