| Ahrens, Alfred T.; 1930 Blue Book; 1930 | 1930 Blue Book | 1930-00-00 | J. H. SHEADLE | Second Assistant |
| Ahrens, Alfred T.; 1941 Red Book; 1941 | 1941 Red Book | 1941-00-00 | W. M. CONNELLY | Chief Engineer |
| Ahrens, Alfred T.; 1942 Red Book; 1942 | 1942 Red Book | 1942-00-00 | W. M. CONNELLY | Chief Engineer |
| Ahrens, Alfred T.; 1945 Red Book; 1945 | 1945 Red Book | 1945-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; 1946 Red Book; 1946 | 1946 Red Book | 1946-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; 1947 Red Book; 1947 | 1947 Red Book | 1947-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; 1950 Red Book; 1950 | 1950 Red Book | 1950-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; 1951 Red Book; 1951 | 1951 Red Book | 1951-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; 1952 Red Book; 1952 | 1952 Red Book | 1952-00-00 | EDWARD B. GREENE | Chief Engineer |
| Ahrens, Alfred T.; 1953 Red Book; 1953 | 1953 Red Book | 1953-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; 1954 Red Book; 1954 | 1954 Red Book | 1954-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; 1955 Red Book; 1955 | 1955 Red Book | 1955-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; 1956 Red Book; 1956 | 1956 Red Book | 1956-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; 1957 Red Book; 1957 | 1957 Red Book | 1957-00-00 | EDWARD B. GREENE | Chief Engineer |
| Ahrens, Alfred T.; 1959 Red Book; 1959 | 1959 Red Book | 1959-00-00 | EDWARD B. GREENE | Chief Engineer |
| Ahrens, Alfred T.; 1960 Red Book; 1960 | 1960 Red Book | 1960-00-00 | EDWARD B. GREENE | Chief Engineer |
| Ahrens, Alfred T.; 1961 Red Book; 1961 | 1961 Red Book | 1961-00-00 | EDWARD B. GREENE | Chief Engineer |
| Ahrens, Alfred T.; 5/48 Great Lakes Review; 1948 | 5/48 Great Lakes Review | 1948-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; Great Lakes Blue Book 1930 | Great Lakes Blue Book 1930 | 1930-00-00 | J. H. SHEADLE | Second Assistant |
| Ahrens, Alfred T.; Great Lakes Blue Book 1930 | Great Lakes Blue Book 1930 | 1930-00-00 | COLONEL | First Assistant |
| Ahrens, Alfred T.; Great Lakes News 11/40; 1940 | Great Lakes News 11/40 | 1940-00-00 | WILLIAM CONNELLY | Chief Engineer |
| Ahrens, Alfred T.; Great Lakes News 1926 | Great Lakes News 1926 | 1926-00-00 | FONTANA | Second Assistant |
| Ahrens, Alfred T.; Great Lakes News 1949 | Great Lakes News 1949 | 1949-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; Great Lakes News 3/43; 1943 | Great Lakes News 3/43 | 1943-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; Great Lakes News 3/43; 1943 | Great Lakes News 3/43 | 1943-00-00 | | coalpasser |
| Ahrens, Alfred T.; Great Lakes News 4/44; 1944 | Great Lakes News 4/44 | 1944-00-00 | WILLIAM G. MATHER | Chief Engineer |
| Ahrens, Alfred T.; LCA crew list (J. Scott) | LCA crew list (J. Scott) | | EDWARD B. GREENE | Chief Engineer |