Expedition sets off from Camp Dubois “under a jentle brease " Clark writes.“ “Clark led the men up the
Missouri River to a French village. They waited for Meriwether Lewis, who caught up to them after attending some final business in St. Louis.”
The exact number of men who left St. Louis is unknown but thought to be around 48 aboard the keelboat. The keelboat carried 20,000 pounds of supplies.