| Douglass, Robert J.; 1936 Red Book; 1936 | 1936 Red Book | 1936-00-00 | COLONEL | Chief Engineer |
| Douglass, Robert J.; 1937 Red Book; 1937 | 1937 Red Book | 1937-00-00 | COLONEL | Chief Engineer |
| Douglass, Robert J.; 1941 Red Book; 1941 | 1941 Red Book | 1941-00-00 | PRESQUE ISLE | Chief Engineer |
| Douglass, Robert J.; 1942 Red Book; 1942 | 1942 Red Book | 1942-00-00 | PRESQUE ISLE | Chief Engineer |
| Douglass, Robert J.; 1943 Red Book; 1943 | 1943 Red Book | 1943-00-00 | PRESQUE ISLE | Chief Engineer |
| Douglass, Robert J.; 1944 Red Book; 1944 | 1944 Red Book | 1944-00-00 | MARQUETTE | Chief Engineer |
| Douglass, Robert J.; 1945 Red Book; 1945 | 1945 Red Book | 1945-00-00 | MARQUETTE | Chief Engineer |
| Douglass, Robert J.; 1946 Red Book; 1946 | 1946 Red Book | 1946-00-00 | MARQUETTE | Chief Engineer |
| Douglass, Robert J.; 1947 Red Book; 1947 | 1947 Red Book | 1947-00-00 | PIONEER | Chief Engineer |
| Douglass, Robert J.; 1950 Red Book; 1950 | 1950 Red Book | 1950-00-00 | JOLIET | Chief Engineer |
| Douglass, Robert J.; 1951 Red Book; 1951 | 1951 Red Book | 1951-00-00 | ISHPEMING | Chief Engineer |
| Douglass, Robert J.; 1952 Red Book; 1952 | 1952 Red Book | 1952-00-00 | ISHPEMING | Chief Engineer |
| Douglass, Robert J.; 5/48 Great Lakes Review; 1948 | 5/48 Great Lakes Review | 1948-00-00 | PIONEER | Chief Engineer |
| Douglass, Robert J.; Great Lakes Blue Book 1930 | Great Lakes Blue Book 1930 | 1930-00-00 | PETER WHITE | First Assistant |
| Douglass, Robert J.; Great Lakes News 1926 | Great Lakes News 1926 | 1926-00-00 | SENATOR | First Assistant |
| Douglass, Robert J.; Great Lakes News 1949 | Great Lakes News 1949 | 1949-00-00 | JOLIET | Chief Engineer |
| Douglass, Robert J.; Great Lakes News 3/40; 1940 | Great Lakes News 3/40 | 1940-00-00 | PRESQUE ISLE | Chief Engineer |