| DeWitt, Roy A.; 1930 Blue Book; 1930 | 1930 Blue Book | 1930-00-00 | WILLIAM G. CLYDE | First Mate |
| DeWitt, Roy A.; 1931 Blue Book; 1931 | 1931 Blue Book | 1931-00-00 | B. F. AFFLECK | First Mate |
| DeWitt, Roy A.; 1937 Red Book; 1937 | 1937 Red Book | 1937-00-00 | CLARENCE A. BLACK | Captain |
| DeWitt, Roy A.; 1941 Red Book; 1941 | 1941 Red Book | 1941-00-00 | ELBERT H. GARY | Captain |
| DeWitt, Roy A.; 1942 Red Book; 1942 | 1942 Red Book | 1942-00-00 | J. PIERPONT MORGAN | Captain |
| DeWitt, Roy A.; 1943 Red Book; 1943 | 1943 Red Book | 1943-00-00 | EUGENE J. BUFFINGTON | Captain |
| DeWitt, Roy A.; 1944 Red Book; 1944 | 1944 Red Book | 1944-00-00 | RICHARD TRIMBLE | Captain |
| DeWitt, Roy A.; 1945 Red Book; 1945 | 1945 Red Book | 1945-00-00 | RICHARD TRIMBLE | Captain |
| DeWitt, Roy A.; 1947 Red Book; 1947 | 1947 Red Book | 1947-00-00 | WILLIAM A. MCGONAGLE | Captain |
| DeWitt, Roy A.; 5/48 Great Lakes Review; 1948 | 5/48 Great Lakes Review | 1948-00-00 | WILLIAM A. MCGONAGLE | Captain |
| DeWitt, Roy A.; Great Lakes News 11/42; 1942 | Great Lakes News 11/42 | 1942-00-00 | EUGENE J. BUFFINGTON | Captain |
| DeWitt, Roy A.; Great Lakes News 2/21; 1921 | Great Lakes News 2/21 | 1921-00-00 | HENRY CORT | First Mate |
| DeWitt, Roy A.; Great Lakes News 7/36; 1936 | Great Lakes News 7/36 | 1936-00-00 | A. H. FERBERT | Captain |
| DeWitt, Roy A.; Great Lakes News 7/36; 1936 | Great Lakes News 7/36 | 1936-00-00 | D. G. KERR | First Mate |
| DeWitt, Roy A.; Great Lakes Review, 5/46; 1946 | Great Lakes Review, 5/46 | 1946-00-00 | WILLIAM A. MCGONAGLE | Captain |
| DeWitt, Roy A.; LCA Bulletin August, 1939 | LCA Bulletin August, 1939 | 1939-00-00 | PRINCETON | Captain |
| DeWitt, Roy A.; LCA/GLPA Bulletin September, 1940 | LCA/GLPA Bulletin September, 1940 | 1940-00-00 | JOHN W. GATES | Captain |
| DeWitt, Roy A.; Pittsburgh Revised Line Up, 5/16; 1916 | Pittsburgh Revised Line Up, 5/16 | 1916-00-00 | WILLIAM A. MCGONAGLE | First Mate |
| DeWitt, Roy A.; R. A. Phillips Collection | R. A. Phillips Collection | | PETER A. B. WIDENER | Second Mate |