| Dahlgren, Oscar; 1922 Red Book; 1922 | 1922 Red Book | 1922-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1923 Red Book; 1923 | 1923 Red Book | 1923-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1924 Red Book; 1924 | 1924 Red Book | 1924-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1925 Red Book; 1925 | 1925 Red Book | 1925-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1926 Red Book | 1926 Red Book | | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1927 Red Book; 1927 | 1927 Red Book | 1927-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1928 Red Book; 1928 | 1928 Red Book | 1928-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1929 Red Book; 1929 | 1929 Red Book | 1929-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1930 Red Book; 1930 | 1930 Red Book | 1930-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1931 Red Book; 1931 | 1931 Red Book | 1931-00-00 | PETOSKEY | Chief Engineer |
| Dahlgren, Oscar; 1934 Red Book; 1934 | 1934 Red Book | 1934-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1935 Red Book; 1935 | 1935 Red Book | 1935-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1936 Red Book; 1936 | 1936 Red Book | 1936-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1937 Red Book; 1937 | 1937 Red Book | 1937-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1938 Red Book; 1938 | 1938 Red Book | 1938-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1939 Red Book; 1939 | 1939 Red Book | 1939-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1940 Red Book; 1940 | 1940 Red Book | 1940-00-00 | ILLINOIS | Chief Engineer |
| Dahlgren, Oscar; 1945 Red Book; 1945 | 1945 Red Book | 1945-00-00 | THEODORE ROOSEVELT | Chief Engineer |
| Dahlgren, Oscar; 1946 Red Book; 1946 | 1946 Red Book | 1946-00-00 | THEODORE ROOSEVELT | Chief Engineer |
| Dahlgren, Oscar; 1947 Red Book; 1947 | 1947 Red Book | 1947-00-00 | THEODORE ROOSEVELT | Chief Engineer |
| Dahlgren, Oscar; Great Lakes News 5/43; 1943 | Great Lakes News 5/43 | 1943-00-00 | MILWAUKEE CLIPPER | Chief Engineer |
| Dahlgren, Oscar; Great Lakes News 7/41; 1941 | Great Lakes News 7/41 | 1941-00-00 | MILWAUKEE CLIPPER | Chief Engineer |
| Dahlgren, Oscar; Great Lakes News 7/44; 1944 | Great Lakes News 7/44 | 1944-00-00 | THEODORE ROOSEVELT | Chief Engineer |