Jeffrey F. Nelsen · Jeffrey Neilson · Jeffrey Nelson · Jeffrey S Nelsen
| title | ISBN-13 | year of publication |
|---|---|---|
| Dinosaur Jokes and Riddles | 978-0-02-689068-7 | 1988 |
| Monster Hunt/Game and Puzzle Book | 978-0-8125-9434-8 | 1994 |
| Monster Jokes and Riddles | 978-0-02-689069-4 | 1988 |
| Space Jokes and Riddles | 978-0-02-689071-7 | 1988 |