Discovery Expedition was started in 1996 by Glen Bishop. He built a scale model keel boat and then pirogues like those of the Corps of Discovery. There are 230 members from 38 states, according to Rob Durrett, who portrays William Bratton who was recruited by William Clark as one of the three blacksmiths in the party. Durrett is from Crawfordsville, IN. Bratton is buried 50 miles from where Durrett lives.

Mike Dotson (left) portrays Meriwether Lewis at present with the party. He has been doing re-enactments for 30 years. Early on he portrayed American mountain men. He got involved in Lewis and Clark re-enacting in 1985. He is from Ohio. On the right is Bud Clark a direct descendant of William Clark.

Vern Illi, Moscow, portrays Sgt. Nathaniel Pryor, one of the four young men from Kentucky of "suitable character". Though he was young, Pryor was made a sergeant, along with his cousin Charles Floyd, on April 7, 1804. If Pryor was married, his wife may have died in child birth. His journal was never found, though it is assumed that he kept one. During the return trip of 1806, at the confluence of the Yellowstone and Missouri rivers it is recorded that he had to return for papers in his saddlebag. He was put in charge of the horses at Mandan. He made it two days before all the horses were gone. The horses were "buffalo horses" and there were problems with them taking off when there were buffalo around, but it is believed that local Indian tribes took them. He and the men who were with him made bull boats from buffalo hides to float out the Missouri to catch up with the part of the party being led by Clark. Pryor had problems with his shoulder which was pulled out of joint on three occasions during the trip. Later in his life the injury he was discharged from the army due to the disability.