Lewis and Clark Trail Heritage Foundation, Inc's photostream

Tom Ronk, left, of Jefferson City, Mo., and Jim Wallace, of Creel Springs, Ill., fold the flag at the grave of Meriwether Lewis in Hohenwald, Tenn., Wednesday, Oct. 7, 2009. Two hundred years after he died mysteriously, explorer Lewis was honored as a courageous hero with the memorial service he never had. In 1804, Lewis and Clark began their exploration of the Louisiana Purchase territory. (AP Photo/Mark Humphrey)

Actors in period battle uniforms stand at the grave of Meriwether Lewis during a ceremony in Hohenwald, Tenn., Wednesday, Oct. 7, 2009. Two hundred years after he died mysteriously, explorer Lewis was honored as a courageous hero with the memorial service he never had. In 1804, Lewis and Clark began their exploration of the Louisiana Purchase territory. (AP Photo/Mark Humphrey)

Howell Bowen, right, a great-great-great-great-nephew of explorer Meriwether Lewis, talks with Bud Clark, left, a great-great-great-grandson of William Clark, at the grave of Meriwether Lewis in Hohenwald, Tenn., Wednesday, Oct. 7, 2009. Two hundred years after he died mysteriously, explorer Lewis was honored as a courageous hero with the memorial service he never had. In 1804, Lewis and Clark began their exploration of the Louisiana Purchase territory. (AP Photo/Mark Humphrey)

A bust of explorer Meriwether Lewis is unveiled in Hohenwald, Tenn. on Wednesday, Oct. 7, 2009. Two hundred years after he died mysteriously, explorer Lewis was honored as a courageous hero with the memorial service he never had. In 1804, Lewis and Clark began their exploration of the Louisiana Purchase territory. (AP Photo/Mark Humphrey)