| Jeffs, H. T.; 1946 Red Book; 1946 | 1946 Red Book | 1946-00-00 | ANN ARBOR NO. 6 | Chief Engineer |
| Jeffs, H. T.; 1947 Red Book; 1947 | 1947 Red Book | 1947-00-00 | ANN ARBOR NO. 6 | Chief Engineer |
| Jeffs, H. T.; 1948 Red Book; 1948 | 1948 Red Book | 1948-00-00 | ANN ARBOR NO. 6 | Chief Engineer |
| Jeffs, H. T.; 1949 Red Book; 1949 | 1949 Red Book | 1949-00-00 | ANN ARBOR NO. 6 | Chief Engineer |
| Jeffs, H. T.; 1950 Red Book; 1950 | 1950 Red Book | 1950-00-00 | ANN ARBOR NO. 6 | Chief Engineer |
| Jeffs, H. T.; 1951 Red Book; 1951 | 1951 Red Book | 1951-00-00 | ANN ARBOR NO. 6 | Chief Engineer |
| Jeffs, H. T.; 1952 Red Book; 1952 | 1952 Red Book | 1952-00-00 | ANN ARBOR NO. 6 | Chief Engineer |
| Jeffs, H. T.; 1953 Red Book; 1953 | 1953 Red Book | 1953-00-00 | ANN ARBOR NO. 6 | Chief Engineer |
| Jeffs, H. T.; 1954 Red Book; 1954 | 1954 Red Book | 1954-00-00 | ANN ARBOR NO. 6 | Chief Engineer |
| Jeffs, H. T.; 1955 Red Book; 1955 | 1955 Red Book | 1955-00-00 | ANN ARBOR NO. 6 | Chief Engineer |
| Jeffs, H. T.; Great Lakes News 1/46; 1946 | Great Lakes News 1/46 | 1946-00-00 | ANN ARBOR NO. 6 | Chief Engineer |