| Cowan Jr., Henry R. | | | FRANK BILLINGS | First Mate |
| Cowan Jr., Henry R.; 1960 Red Book; 1960 | 1960 Red Book | 1960-00-00 | SIMON J. MURPHY | Captain |
| Cowan Jr., Henry R.; Great Lake Review 4/42; 1942 | Great Lake Review 4/42 | 1942-00-00 | JAMES E. FERRIS | Second Mate |
| Cowan Jr., Henry R.; Great Lakes News 4/45; 1945 | Great Lakes News 4/45 | 1945-00-00 | | Superintendent |
| Cowan Jr., Henry R.; Great Lakes News 5/42; 1942 | Great Lakes News 5/42 | 1942-00-00 | JAMES E. FERRIS | Second Mate |
| Cowan Jr., Henry R.; Great Lakes Review May1945 | Great Lakes Review May1945 | 1945-00-00 | FRANK BILLINGS | First Mate |
| Cowan Jr., Henry R.; Inland Seas Spring 1958 | Inland Seas Spring 1958 | 1958-00-00 | ANDREW S. UPSON | Captain |
| Cowan Jr., Henry R.; LCA Bulletin May, 1939 | LCA Bulletin May, 1939 | 1939-00-00 | NORWAY | Wheelsman |