| Splan, Howard C. | | | | |
| Splan, Howard C.; 1930 Blue Book; 1930 | 1930 Blue Book | 1930-00-00 | THOMAS LYNCH | Second Assistant |
| Splan, Howard C.; 1931 Blue Book; 1931 | 1931 Blue Book | 1931-00-00 | WILLIAM EDENBORN | Second Asistant |
| Splan, Howard C.; 1937 Blue Book; 1937 | 1937 Blue Book | 1937-00-00 | JOHN H. MCLEAN | First Assistant |
| Splan, Howard C.; 1941 Great Lakes Blue Book (?); 1941 | 1941 Great Lakes Blue Book (?) | 1941-00-00 | THOMAS LYNCH | First Assistant |
| Splan, Howard C.; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | WILLIAM A. IRVIN | First Assistant |
| Splan, Howard C.; 1951 Red Book; 1951 | 1951 Red Book | 1951-00-00 | MALIETOA | Chief Engineer |
| Splan, Howard C.; 1952 Red Book; 1952 | 1952 Red Book | 1952-00-00 | CORNELL | Chief Engineer |
| Splan, Howard C.; 1953 Red Book; 1953 | 1953 Red Book | 1953-00-00 | HENRY C. FRICK | Chief Engineer |
| Splan, Howard C.; 1954 Red Book; 1954 | 1954 Red Book | 1954-00-00 | EUGENE W. PARGNY | Chief Engineer |
| Splan, Howard C.; 1955 Red Book; 1955 | 1955 Red Book | 1955-00-00 | EUGENE W. PARGNY | Chief Engineer |
| Splan, Howard C.; 1956 Red Book; 1956 | 1956 Red Book | 1956-00-00 | EUGENE W. PARGNY | Chief Engineer |
| Splan, Howard C.; 1957 Red Book; 1957 | 1957 Red Book | 1957-00-00 | EUGENE W. PARGNY | Chief Engineer |
| Splan, Howard C.; 1958 Red Book; 1958 | 1958 Red Book | 1958-00-00 | EUGENE W. PARGNY | Chief Engineer |
| Splan, Howard C.; 1959 Red Book; 1959 | 1959 Red Book | 1959-00-00 | RICHARD V. LINDABURY | Chief Engineer |
| Splan, Howard C.; 1960 Red Book; 1960 | 1960 Red Book | 1960-00-00 | HORACE JOHNSON | Chief Engineer |
| Splan, Howard C.; 1961 Red Book; 1961 | 1961 Red Book | 1961-00-00 | HORACE JOHNSON | Chief Engineer |
| Splan, Howard C.; 1962 Red Book; 1962 | 1962 Red Book | 1962-00-00 | GEORGE A. SLOAN | Chief Engineer |
| Splan, Howard C.; 1963 Red Book; 1963 | 1963 Red Book | 1963-00-00 | GEORGE A. SLOAN | Chief Engineer |
| Splan, Howard C.; 1964 Red Book; 1964 | 1964 Red Book | 1964-00-00 | PHILIP R. CLARKE | Chief Engineer |
| Splan, Howard C.; 1965 Red Book; 1965 | 1965 Red Book | 1965-00-00 | PHILIP R. CLARKE | Chief Engineer |
| Splan, Howard C.; 1966 Red Book; 1965 | 1966 Red Book | 1965-00-00 | PHILIP R. CLARKE | Chief Engineer |
| Splan, Howard C.; 1967 Red Book; 1967 | 1967 Red Book | 1967-00-00 | PHILIP R. CLARKE | Chief Engineer |
| Splan, Howard C.; Great Lakes News 6/43; 1943 | Great Lakes News 6/43 | 1943-00-00 | EUGENE P. THOMAS | First Assistant |
| Splan, Howard C.; Great Lakes Review. 1944 | Great Lakes Review. 1944 | 1944-00-00 | THOMAS W. LAMONT | First Assistant |