| Leonard, Louis; Detroit Post 4/17; 1917 | Detroit Post 4/17 | 1917-00-00 | ALTA | Captain |
| Leonard, Louis; 1899 Red Book; 1899 | 1899 Red Book | 1899-00-00 | | Barge Captain |
| Leonard, Louis; 1900 Red Book; 1900 | 1900 Red Book | 1900-00-00 | | Barge Captain |
| Leonard, Louis; 1901 Red Book; 1901 | 1901 Red Book | 1901-00-00 | 105 | Captain |
| Leonard, Louis; 1902 Red Book; 1902 | 1902 Red Book | 1902-00-00 | MANDA | Captain |
| Leonard, Louis; 1903 Red Book; 1903 | 1903 Red Book | 1903-00-00 | MADEIRA | Captain |
| Leonard, Louis; 1904 Red Book; 1904 | 1904 Red Book | 1904-00-00 | MARSALA | Captain |
| Leonard, Louis; 1905 Red Book; 1905 | 1905 Red Book | 1905-00-00 | MADERIA | Captain |
| Leonard, Louis; 1906 Red Book; 1906 | 1906 Red Book | 1906-00-00 | MARSALA | Captain |
| Leonard, Louis; 1907 Red Book; 1907 | 1907 Red Book | 1907-00-00 | MARSALA | Captain |
| Leonard, Louis; 1908 Lynn's; 1908 | 1908 Lynn's | 1908-00-00 | MARSALA | Captain |