| Jacobson, L. C. | | | JOLIET | First Assistant |
| Jacobson, L. C.; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | PONTIAC | First Assistant |
| Jacobson, L. C.; 1951 Red Book; 1951 | 1951 Red Book | 1951-00-00 | YOSEMITE | Chief Engineer |
| Jacobson, L. C.; 1952 Red Book; 1952 | 1952 Red Book | 1952-00-00 | YOSEMITE | Chief Engineer |
| Jacobson, L. C.; 1953 Red Book; 1953 | 1953 Red Book | 1953-00-00 | YOSEMITE | Chief Engineer |
| Jacobson, L. C.; 1954 Red Book; 1954 | 1954 Red Book | 1954-00-00 | MARQUETTE | Chief Engineer |
| Jacobson, L. C.; Great Lake Review 4/42; 1942 | Great Lake Review 4/42 | 1942-00-00 | JOLIET | Second Assistant |
| Jacobson, L. C.; Great Lakes Review 4/51; 1951 | Great Lakes Review 4/51 | 1951-00-00 | PONTIAC | First Assistant |
| Jacobson, L. C.; Great Lakes Review. 1944 | Great Lakes Review. 1944 | 1944-00-00 | CLETUS SCHNEIDER | First Assistant |