| 其他書名 | archeological data section; the Lemon house, Allegheny Portage Railroad National Historic Site, Pennsylvania |
| 出版 | U.S. Department of the Interior, National Park Service, 1984 |
| URL | http://books.google.com.hk/books?id=xT4ibRdvVTwC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |