| A | B |
| Meriweather Lewis | Leader of expedition |
| William Clark | Chosen by Lewis as second in command |
| York | Clark's slave and companion |
| Seaman | Lewis' 150 lb.Newfoundland dog |
| Sacajawea | Shoshone woman who acted as guide |
| Toussaint Charbonneau | Sacajawea's husband and fellow guide |
| Thomas Jefferson | President of US at time of Expedition |
| Albert Galletine | Secretery of Treasurey for Jefferson |