| Clapp, Robert C.; 1899 Red Book; 1899 | 1899 Red Book | 1899-00-00 | CHICORA | Captain |
| Clapp, Robert C.; 1900 Red Book; 1900 | 1900 Red Book | 1900-00-00 | CHICORA | Captain |
| Clapp, Robert C.; 1901 Red Book; 1901 | 1901 Red Book | 1901-00-00 | CHICORA | Captain |
| Clapp, Robert C.; 1902 Red Book; 1902 | 1902 Red Book | 1902-00-00 | CHICORA | Captain |
| Clapp, Robert C.; 1903 Red Book; 1903 | 1903 Red Book | 1903-00-00 | CHICORA | Captain |
| Clapp, Robert C.; 1904 Red Book; 1904 | 1904 Red Book | 1904-00-00 | CHICORA | Captain |
| Clapp, Robert C.; 1905 Red Book; 1905 | 1905 Red Book | 1905-00-00 | CHICORA | Captain |
| Clapp, Robert C.; 1906 Red Book; 1906 | 1906 Red Book | 1906-00-00 | CORONA | Captain |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | S. & J. COLLIER | |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | UNION JACK | |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | ST. LOUIS | First Mate |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | PICTON | First Mate |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | M. J. COLLINS | First Mate |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | RUPERT | First Mate |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | MAZEPPA | First Mate |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | HASKELL | Wheelsman |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | EMPRESS OF INDIA | Wheelsman |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | CHICORA | Second Mate |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | CHICORA | Second Mate |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | CHICORA | First Mate |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | CHICORA | First Mate |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | CHICORA | First Mate |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | CHICORA | Captain |
| Clapp, Robert C.; Prominent Men of the GL | Prominent Men of the GL | | CHICORA | Captain |