| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Nature stories for children | 978-0-8010-4056-6 (0-8010-4056-6) | 1978 |
| Number quizzes on the Bible | 978-0-8010-4127-3 (0-8010-4127-9) | 1975 |
| Object Lesson Programs For Young People | 978-0-8010-4082-5 (0-8010-4082-5) | 1975 |