| 其他書名 | An Address Delivered at the 86th Annual Meeting of the Penn Club, January 19, 1961 at the Union League of Philadelphia |
| 出版 | Hall of the Historical Society of Pennsylvania, 1961 |
| URL | http://books.google.com.hk/books?id=gKjyGwAACAAJ&hl=&source=gbs_api |