| 其他書名 | A History of the Road Controversy at Colorado National Monument |
| 出版 | U.S. Department of the Interior, National Park Service, Intermountain Region, 1997 |
| URL | http://books.google.com.hk/books?id=ckvW1P0SO30C&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |