Petrified Wood from
USA | |
| Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks. |
| |
| Gorden De'Young collection |
USA | |
| Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks. |
| |
| Gorden De'Young collection |
Mount Adams area, Mount Adams, Yakima County, Washington, USA