| Answer | Crossword Clue |
|---|---|
| HENNEPIN | Explorer of the Upper Mississippi. |
| IOWAN | Dweller on the upper Mississippi |
| JOLIET | Explorer of the Mississippi |
| LASALLE | Explorer of the Mississippi |
| LASALLE | Explorer of the Mississippi. |
| LASALLE | French explorer of the Mississippi |
| LASALLE | Famous explorer of the Mississippi, 1678. |
