| Robertson, Alexander M.; 1912 Red Book; 1912 | 1912 Red Book | 1912-00-00 | WILLIAM F. FITCH | Chief Engineer |
| Robertson, Alexander M.; 1913 Red Book; 1913 | 1913 Red Book | 1913-00-00 | WILLIAM F. FITCH | Chief Engineer |
| Robertson, Alexander M.; 1914 Red Book; 1914 | 1914 Red Book | 1914-00-00 | LEONARD C. HANNA | Chief Engineer |
| Robertson, Alexander M.; 1917 Red Book; 1917 | 1917 Red Book | 1917-00-00 | LEONARD C. HANNA | Chief Engineer |
| Robertson, Alexander M.; 1918 Red Book; 1918 | 1918 Red Book | 1918-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1919 Red Book; 1919 | 1919 Red Book | 1919-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1920 Red Book; 1920 | 1920 Red Book | 1920-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1921 Red Book; 1921 | 1921 Red Book | 1921-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1922 Red Book; 1922 | 1922 Red Book | 1922-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1923 Red Book; 1923 | 1923 Red Book | 1923-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1924 Red Book; 1924 | 1924 Red Book | 1924-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1925 Red Book; 1925 | 1925 Red Book | 1925-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1926 Red Book | 1926 Red Book | | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1927 Red Book; 1927 | 1927 Red Book | 1927-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1928 Red Book; 1928 | 1928 Red Book | 1928-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1929 Red Book; 1929 | 1929 Red Book | 1929-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1930 Red Book; 1930 | 1930 Red Book | 1930-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1931 Red Book; 1931 | 1931 Red Book | 1931-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1934 Red Book; 1934 | 1934 Red Book | 1934-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1935 Red Book; 1935 | 1935 Red Book | 1935-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1936 Red Book; 1936 | 1936 Red Book | 1936-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1938 Red Book; 1938 | 1938 Red Book | 1938-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1939 Red Book; 1939 | 1939 Red Book | 1939-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; 1940 Red Book; 1940 | 1940 Red Book | 1940-00-00 | FRED G. HARTWELL | Chief Engineer |
| Robertson, Alexander M.; 1944 Red Book; 1944 | 1944 Red Book | 1944-00-00 | FRED G. HARTWELL | Chief Engineer |
| Robertson, Alexander M.; 1945 Red Book; 1945 | 1945 Red Book | 1945-00-00 | FRED G. HARTWELL | Chief Engineer |
| Robertson, Alexander M.; Great Lakes News 12/41; 1941 | Great Lakes News 12/41 | 1941-00-00 | FRED G. HARTWELL | Chief Engineer |
| Robertson, Alexander M.; Great Lakes News 5/46; 1946 | Great Lakes News 5/46 | 1946-00-00 | | |
| Robertson, Alexander M.; Great Lakes News 5/46; 1946 | Great Lakes News 5/46 | 1946-00-00 | WILLIAM F. FITCH | Chief Engineer |
| Robertson, Alexander M.; Great Lakes News 5/46; 1946 | Great Lakes News 5/46 | 1946-00-00 | LOUIS W. HILL | Chief Engineer |
| Robertson, Alexander M.; Great Lakes News 9/42; 1942 | Great Lakes News 9/42 | 1942-00-00 | FRED G. HARTWELL | Chief Engineer |
| Robertson, Alexander M.; Great Lakes News 9/43; 1943 | Great Lakes News 9/43 | 1943-00-00 | FRED G. HARTWELL | Chief Engineer |