| GMD | Text |
| Classification | E Sen |
| Publisher | New York, Harper & Row, c1963 |
| Subject | Fantasy -- Juvenile fiction.Monsters -- Juvenile fiction.Monsters.Monsters -- FictionFantasy. |
| Topic | Beginning Reader (0L-200L) |
| Description | 1 v. (unpaged) : col. ill. ; 24 x 26 cm. |
| ISBN | 9780060255206 |