| Sahlen, Conrad; 1917 Red Book; 1917 | 1917 Red Book | 1917-00-00 | ROMAN | Chief Engineer |
| Sahlen, Conrad; 1918 Red Book; 1918 | 1918 Red Book | 1918-00-00 | JAMES B. NEILSON | Chief Engineer |
| Sahlen, Conrad; 1919 Red Book; 1919 | 1919 Red Book | 1919-00-00 | FRANK ROCKERFELLER | Chief Engineer |
| Sahlen, Conrad; 1920 Red Book; 1920 | 1920 Red Book | 1920-00-00 | FRANK ROCKERFELLER | Chief Engineer |
| Sahlen, Conrad; 1921 Red Book; 1921 | 1921 Red Book | 1921-00-00 | FRANK ROCKERFELLER | Chief Engineer |
| Sahlen, Conrad; 1922 Red Book; 1922 | 1922 Red Book | 1922-00-00 | PRINCETON | Chief Engineer |
| Sahlen, Conrad; 1923 Red Book; 1923 | 1923 Red Book | 1923-00-00 | PRINCETON | Chief Engineer |
| Sahlen, Conrad; 1924 Red Book; 1924 | 1924 Red Book | 1924-00-00 | PRINCETON | Chief Engineer |
| Sahlen, Conrad; 1925 Red Book; 1925 | 1925 Red Book | 1925-00-00 | PRINCETON | Chief Engineer |
| Sahlen, Conrad; 1926 Red Book | 1926 Red Book | | PRINCETON | Chief Engineer |
| Sahlen, Conrad; 1927 Red Book; 1927 | 1927 Red Book | 1927-00-00 | PRINCETON | Chief Engineer |
| Sahlen, Conrad; 1928 Red Book; 1928 | 1928 Red Book | 1928-00-00 | PRINCETON | Chief Engineer |
| Sahlen, Conrad; 1929 Red Book; 1929 | 1929 Red Book | 1929-00-00 | PRINCETON | Chief Engineer |
| Sahlen, Conrad; 1930 Red Book; 1930 | 1930 Red Book | 1930-00-00 | PRINCETON | Chief Engineer |
| Sahlen, Conrad; 1931 Red Book; 1931 | 1931 Red Book | 1931-00-00 | PRINCETON | Chief Engineer |
| Sahlen, Conrad; 1934 Red Book; 1934 | 1934 Red Book | 1934-00-00 | PETER A. B. WIDENER | Chief Engineer |
| Sahlen, Conrad; 1935 Red Book; 1935 | 1935 Red Book | 1935-00-00 | WILLIAM B. DICKSON | Chief Engineer |
| Sahlen, Conrad; 1936 Red Book; 1936 | 1936 Red Book | 1936-00-00 | WILLIAM B. DICKSON | Chief Engineer |
| Sahlen, Conrad; 1937 Red Book; 1937 | 1937 Red Book | 1937-00-00 | WILLIAM B. DICKSON | Chief Engineer |
| Sahlen, Conrad; 1938 Red Book; 1938 | 1938 Red Book | 1938-00-00 | RICHARD V. LINDABURY | Chief Engineer |
| Sahlen, Conrad; 1939 Red Book; 1939 | 1939 Red Book | 1939-00-00 | RICHARD V. LINDABURY | Chief Engineer |
| Sahlen, Conrad; 1940 Red Book; 1940 | 1940 Red Book | 1940-00-00 | RICHARD V. LINDABURY | Chief Engineer |
| Sahlen, Conrad; 1941 Red Book; 1941 | 1941 Red Book | 1941-00-00 | RICHARD V. LINDABURY | Chief Engineer |