| Houston, Ralph W.; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | NORTH AMERICAN | First Mate |
| Houston, Ralph W.; 8/48 Great Lakes Review; 1948 | 8/48 Great Lakes Review | 1948-00-00 | NORTH AMERICAN | First Mate |
| Houston, Ralph W.; Great Lakes News 5/42; 1942 | Great Lakes News 5/42 | 1942-00-00 | NORTH AMERICAN | First Mate |
| Houston, Ralph W.; Great Lakes News 7/40; 1940 | Great Lakes News 7/40 | 1940-00-00 | SOUTH AMERICAN | Second Mate |
| Houston, Ralph W.; Great Lakes News 7/43; 1943 | Great Lakes News 7/43 | 1943-00-00 | NORTH AMERICAN | Second Mate |
| Houston, Ralph W.; Great Lakes Review. 1944 | Great Lakes Review. 1944 | 1944-00-00 | SOUTH AMERICAN | Second Mate |
| Houston, Ralph W.; South American Radio News | South American Radio News | | SOUTH AMERICAN | Second Mate |