| O'Hara, Thomas; Great Lakes News 1/42; 1942 | Great Lakes News 1/42 | 1942-00-00 | WILLIAM H. WOLF | First Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | OLIVER CULVER | seaman |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | D. K. CLINT | seaman |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | CECELIA JEFFRIES | |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SCHUYLKILL | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SCHUYLKILL | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SCHUYLKILL | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SCHUYLKILL | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SCHUYLKILL | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | ANNIE YOUNG | Wheelsman |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | ALASKA | Wheelsman |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | COMMODORE | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | ARABIA | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | MILWAUKEE | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | WILLIAM H. WOLF | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | CHEMUNG | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | ROBERT A. PACKER | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SITKA | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | NORTHERN QUEEN | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | CHEMUNG | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | LACKAWANNA | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | GRAND TRAVERSE | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | H. J. JEWETT | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | H. J. JEWETT | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | NEW YORK | Second Mate |
| O'Hara, Thomas; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | JOHN C. GAULT | Second Mate |
| O'Hara, Thomas; St. Joseph Traveler-Herald 6/17; 1917 | St. Joseph Traveler-Herald 6/17 | 1917-00-00 | MESSENGER | Clerk |
| O'Hara, Thomas; St. Joseph Traveler-Herald 6/17; 1917 | St. Joseph Traveler-Herald 6/17 | 1917-00-00 | LORA | Clerk |