| Author: | United States. National Park Service |
| Subject: | F786, Petrified Forest National Park (Ariz.) |
| Format: | Text |
| Date issued: | 2019 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Petrified Forest National Monument (1953) [electronic resource] / United States. National Park Service |