| 其他書名 | Address at the Second Annual Convention of Wholesale Distributors of Armstrong's Building Materials, Lancaster, Pennsylvannia, May 12, 1949 |
| 出版 | Lancaster Press, Incorporated, 1949 |
| URL | http://books.google.com.hk/books?id=8uST-IpgP-AC&hl=&source=gbs_api |