| 其他書名 | A Field Guide for the Gem Hunter, Mineral Collector and Tourist, Covering Both Popular and Little Known Areas of Oregon, Washington, Idaho, British Columbia |
| 出版 | Gembooks, 1962 |
| URL | http://books.google.com.hk/books?id=1ew5NAEACAAJ&hl=&source=gbs_api |