| Holdorf, G.; 1929 Red Book; 1929 | 1929 Red Book | 1929-00-00 | MAJESTIC | Chief Engineer |
| Holdorf, G.; 1944 Red Book; 1944 | 1944 Red Book | 1944-00-00 | BUFFALO | Captain |
| Holdorf, G.; 1945 Red Book; 1945 | 1945 Red Book | 1945-00-00 | BUFFALO | Captain |
| Holdorf, G.; 1947 Red Book; 1947 | 1947 Red Book | 1947-00-00 | BUFFALO | Captain |
| Holdorf, G.; 1948 Red Book; 1948 | 1948 Red Book | 1948-00-00 | BUFFALO | Captain |
| Holdorf, G.; 1949 Red Book; 1949 | 1949 Red Book | 1949-00-00 | BUFFALO | Captain |
| Holdorf, G.; 1950 Red Book; 1950 | 1950 Red Book | 1950-00-00 | BUFFALO | Captain |
| Holdorf, G.; 1951 Red Book; 1951 | 1951 Red Book | 1951-00-00 | BUFFALO | Captain |