| Unsinn, J.; 1929 Red Book; 1929 | 1929 Red Book | 1929-00-00 | OHIO | Chief Engineer |
| Unsinn, J.; 1935 Red Book; 1935 | 1935 Red Book | 1935-00-00 | ILLINOIS | Chief Engineer |
| Unsinn, J.; 1937 Red Book; 1937 | 1937 Red Book | 1937-00-00 | ILLINOIS | Chief Engineer |
| Unsinn, J.; 1938 Red Book; 1938 | 1938 Red Book | 1938-00-00 | ILLINOIS | Chief Engineer |
| Unsinn, J.; 1939 Red Book; 1939 | 1939 Red Book | 1939-00-00 | ILLINOIS | Chief Engineer |
| Unsinn, J.; 1940 Red Book; 1940 | 1940 Red Book | 1940-00-00 | ILLINOIS | Chief Engineer |
| Unsinn, J.; 1941 Red Book; 1941 | 1941 Red Book | 1941-00-00 | ILINOIS | Chief Engineer |
| Unsinn, J.; 1942 Red Book; 1942 | 1942 Red Book | 1942-00-00 | ILLINOIS | Chief Engineer |