| A | B |
| Fort Massac | flea bit outpost on the Ohio where High and Jack join the expedition |
| The Experiment | the boat made by Captain Lewis |
| Fort Mandan | The expedition settled here for the winter of 1804- |
| Great Falls of the Missouri | The river was in flood and maybe a mile across |
| Black Buffalo | _____ “good Indian.” Tall, towered over everyone |
| Jack Newman | He went to college in Philadelphia and was as smart as |
| Charboneau | Fifty years old French man who was a shrunken, sly old codger |
| Sacagewea | Shoshone Indian of no more than sixteen years old |
| John Shields | He made tomahawks to trade with the Indians |
| Cameahwait | Chief of the Shoshone |
| Old Toby | , old warrior guide who led the expedition through the Rocky Mountains |
| Dolly | little mare loaded with trinkets on the trip through the Rockies/ Hugh led her |
| Hugh McNeal | Protagonist from Wheeling; his father was a boat builder |
| John Ordway | God-fearing man fro mNew Hampshire. "As slow as pond water" |
| La Liberte | biggest of the Frenchmen on journey; burly, hairy scoundrel who was missing an eye |
| Jack Newman | went to college in Philadelphia. As smart as the officers |
| Meriwether Lewis | shorter of two captains; kin to President Jefferson |
| Partisan | Chief of the Sioux Indians |
| Peter Cruzatte | Only member of the expedition to play the fiddle |
| William Clark | Captain who recruits High for the expedition. Has bright red hair |
| George Drewer | a "crack shot"; Would vanish in the forest for weeks at a time |
| Reuben Fields | Raw-pinched, greasy face; threatens Hugh not to testify against him |
| Patrick Gass | elected Sgt. to replace Charley Floyd |
| Moses Reed | court marshaled for stealing gun and amunition and for desertion |
| Charley Floyd | much older than the others; He dies before the end of the journey |
| Council Bluffs | good views of the river; place wehre the expedtion stopped to meet with the Oto and Omaha |