| Jacobson, Oscar; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | E. G. MATHIOTT | First Mate |
| Jacobson, Oscar; 5/48 Great Lakes Review; 1948 | 5/48 Great Lakes Review | 1948-00-00 | E. G. MATHIOTT | First Mate |
| Jacobson, Oscar; Columbia Shipmates (51) | Columbia Shipmates (51) | | E. G. MATHIOTT | First Mate |
| Jacobson, Oscar; Columbia Shipmates (51) | Columbia Shipmates (51) | | E. G. MATHIOTT | First Mate |
| Jacobson, Oscar; Great Lakes News 5/45; 1945 | Great Lakes News 5/45 | 1945-00-00 | J. R. SENSIBAR | Second Mate |
| Jacobson, Oscar; Great Lakes News 7/43; 1943 | Great Lakes News 7/43 | 1943-00-00 | R. E. MOODY | Second Mate |
| Jacobson, Oscar; Great Lakes Review. 1944 | Great Lakes Review. 1944 | 1944-00-00 | J. R. SENSIBAR | Second Mate |