| 其他書名 | the Hofer collection; [catalogue of an exhibition held at] the Houghton Library, Harvard University, 1980 |
| 出版 | Harvard University, Department of Printing and Graphic Arts, 1980 |
| URL | http://books.google.com.hk/books?id=noelzQEACAAJ&hl=&source=gbs_api |