| Hammel, Leonard W.; Columbia Shipmates (51) | Columbia Shipmates (51) | | CARROLLTON | Second Assistant |
| Hammel, Leonard W.; Great Lake Review 3/43; 1943 | Great Lake Review 3/43 | 1943-00-00 | MARYLAND | First Assistant |
| Hammel, Leonard W.; Great Lakes News 4/40; 1940 | Great Lakes News 4/40 | 1940-00-00 | POWELL STACKHOUSE | Second Assistant |
| Hammel, Leonard W.; Great Lakes News 4/45; 1945 | Great Lakes News 4/45 | 1945-00-00 | MARYLAND | First Assistant |
| Hammel, Leonard W.; Great Lakes News 5/43; 1943 | Great Lakes News 5/43 | 1943-00-00 | MARYLAND | First Assistant |
| Hammel, Leonard W.; Great Lakes Review, 5/46; 1946 | Great Lakes Review, 5/46 | 1946-00-00 | MARYLAND | First Assistant |