| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Colorado Gem Trails: And Mineral Guide | Paperback | 978-0-8040-0956-0 | 1972 |
| Geology | " | 978-0-8220-1718-9 | 1982 |
| Geology | " | 978-0-06-460160-3 | 1975 |
| Handbook for Prospectors | Hardcover | 978-0-07-049025-3 | 1973 |
| How to Know the Minerals and Rocks | Paperback | 978-0-07-049021-5 | 1963 |
| How to Know the Minerals and Rocks | Hardcover | 978-0-07-049024-6 | 1955 |
| Rocks and Minerals | Paperback | 978-0-06-463260-7 | 1969 |
M P · M. Pearl · R. M. · R. P. · R. Pearl · Richard M. · Richard Maxwell, Pearl · Richard P. · Richard Pearl
Cliffs Notes · HarperCollins · McGraw-Hill · Swallow Press