| Knudsen, Leroy; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | JOHN T. HUTCHINSON | First Assistant |
| Knudsen, Leroy; 1957 Red Book; 1957 | 1957 Red Book | 1957-00-00 | HARRY WILLIAM HOSFORD | Chief Engineer |
| Knudsen, Leroy; 1967 Red Book; 1967 | 1967 Red Book | 1967-00-00 | BUCKEYE MONITOR | Chief Engineer |
| Knudsen, Leroy; 1968 Red Book; 1968 | 1968 Red Book | 1968-00-00 | BUCKEYE MONITOR | Chief Engineer |
| Knudsen, Leroy; 1969 Red Book; 1969 | 1969 Red Book | 1969-00-00 | BUCKEYE MONITOR | Chief Engineer |
| Knudsen, Leroy; 1970 Red Book; 1970 | 1970 Red Book | 1970-00-00 | BUCKEYE MONITOR | Chief Engineer |
| Knudsen, Leroy; Great Lakes News 5/42; 1942 | Great Lakes News 5/42 | 1942-00-00 | ALEXANDER MCDOUGALL | Second Assistant |
| Knudsen, Leroy; Great Lakes News 7/43; 1943 | Great Lakes News 7/43 | 1943-00-00 | JOHN S. MANUEL | Second Assistant |
| Knudsen, Leroy; Great Lakes Review May1945 | Great Lakes Review May1945 | 1945-00-00 | JOHN T. HUTCHINSON | Second Assistant |
| Knudsen, Leroy; Great Lakes Review, 5/46; 1946 | Great Lakes Review, 5/46 | 1946-00-00 | JOHN T. HUTCHINSON | First Assistant |
| Knudsen, Leroy; Great Lakes Review. 1944 | Great Lakes Review. 1944 | 1944-00-00 | JOHN T. HUTCHINSON | Second Assistant |