Researchers trying to pinpoint the location of the Travelers’ Rest campsite drew on an unlikely source: an eighteenth-century drill manual created during the Revolutionary War by Baron William Frederick Von Steuben in collaboration with Continental Army leaders at George Washington’s request. That manual became the foundation of military training and procedure for the United States Army, and because the Corps of Discovery was a military expedition trained in the drills, inspection, and discipline of the era, local archaeologists used it as an important reference. Features discovered in the soil directly matched the prescribed camp layout, indicating that Lewis and Clark closely followed military protocol after more than 6,000 miles of travel, and the archaeological evidence found here in 2002, together with Von Steuben’s descriptions and diagrams, supports an interpretation of what Travelers' Rest Camp might have looked like on the expedition’s return in 1806.