| Crehan, Edward T. | | | WILLIAM G. MATHER | First Assistant |
| Crehan, Edward T.; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | CHAMPLAIN | Second Assistant |
| Crehan, Edward T.; 1966 Red Book; 1965 | 1966 Red Book | 1965-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Crehan, Edward T.; 1967 Red Book; 1967 | 1967 Red Book | 1967-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Crehan, Edward T.; 1968 Red Book; 1968 | 1968 Red Book | 1968-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Crehan, Edward T.; Great Lake Review 4/42; 1942 | Great Lake Review 4/42 | 1942-00-00 | MICHIGAN | Second Assistant |
| Crehan, Edward T.; Great Lakes Review. 1944 | Great Lakes Review. 1944 | 1944-00-00 | CADILLAC | Second Assistant |