| 其他書名 | Seacoast Fortifications, San Francisco Harbor, Golden Gate National Recreation Area, California |
| 出版 | Denver Service Center, Historic Preservation Team, National Park Service, U.S. Department of the Interior, 1979 |
| URL | http://books.google.com.hk/books?id=YB9Fya6pgVUC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |