211
Caldwell, Mary E.
| The H. W. Gray Co., Inc |
1970
213
Lee, T. Charles
| The H. W. Gray Co., Inc. |
1970
214
Thiman, Eric H.
| The H. W. Gray Co., Inc. |
1970
215
Kerr, Edward
| H. W. Gray Publications |
1972
216
Warner, Richard
| H.W. Gray Poblications |
1973
217
218
Vigeland, Hans
| The H. W. Gray Co., Inc. |
1997
219
Naumann, Johann Christian
| The H. W. Gray Co., Inc. |
1999