| Zobel, Elmer; 1913 Red Book; 1913 | 1913 Red Book | 1913-00-00 | NEPTUNE | Chief Engineer |
| Zobel, Elmer; 1914 Red Book; 1914 | 1914 Red Book | 1914-00-00 | NEPTUNE | Chief Engineer |
| Zobel, Elmer; 1915 Red Book; 1915 | 1915 Red Book | 1915-00-00 | LUPUS | Chief Engineer |
| Zobel, Elmer; 1917 Red Book; 1917 | 1917 Red Book | 1917-00-00 | CALUMET | Chief Engineer |
| Zobel, Elmer; 1918 Red Book; 1918 | 1918 Red Book | 1918-00-00 | CALUMET | Chief Engineer |
| Zobel, Elmer; 1919 Red Book; 1919 | 1919 Red Book | 1919-00-00 | CALUMET | Chief Engineer |
| Zobel, Elmer; 1920 Red Book; 1920 | 1920 Red Book | 1920-00-00 | CALUMET | Chief Engineer |
| Zobel, Elmer; 1921 Red Book; 1921 | 1921 Red Book | 1921-00-00 | CALUMET | Chief Engineer |
| Zobel, Elmer; 1922 Red Book; 1922 | 1922 Red Book | 1922-00-00 | CALUMET | Chief Engineer |
| Zobel, Elmer; 1923 Red Book; 1923 | 1923 Red Book | 1923-00-00 | CALUMET | Chief Engineer |
| Zobel, Elmer; 1924 Red Book; 1924 | 1924 Red Book | 1924-00-00 | CALUMET | Chief Engineer |
| Zobel, Elmer; 1925 Red Book; 1925 | 1925 Red Book | 1925-00-00 | CALUMET | Chief Engineer |
| Zobel, Elmer; 1926 Red Book | 1926 Red Book | | CALUMET | Chief Engineer |
| Zobel, Elmer; 1927 Red Book; 1927 | 1927 Red Book | 1927-00-00 | J. A. CAMPBELL | Chief Engineer |
| Zobel, Elmer; 1928 Red Book; 1928 | 1928 Red Book | 1928-00-00 | J. A. CAMPBELL | Chief Engineer |
| Zobel, Elmer; 1929 Red Book; 1929 | 1929 Red Book | 1929-00-00 | J. A. CAMPBELL | Chief Engineer |
| Zobel, Elmer; 1930 Red Book; 1930 | 1930 Red Book | 1930-00-00 | J. A. CAMPBELL | Chief Engineer |
| Zobel, Elmer; 1931 Red Book; 1931 | 1931 Red Book | 1931-00-00 | J. A. CAMPBELL | Chief Engineer |
| Zobel, Elmer; 1936 Red Book; 1936 | 1936 Red Book | 1936-00-00 | J. A. CAMPBELL | Chief Engineer |
| Zobel, Elmer; 1937 Red Book; 1937 | 1937 Red Book | 1937-00-00 | YOUNGSTOWN | Chief Engineer |
| Zobel, Elmer; 1940 Red Book; 1940 | 1940 Red Book | 1940-00-00 | COLONEL JAMES PICKANDS | Chief Engineer |
| Zobel, Elmer; Great lakes News 7/39; 1939 | Great lakes News 7/39 | 1939-00-00 | COLONEL JAMES PICKANDS | Chief Engineer |