Prehistoric cultural affiliation(s) include Salish, Pend D'Orelle, Nez Perce, Kootenai, Colville, Spokane, Blackfeet, Crow, Shoshone and dating back to 5499 BC.
Some of the country's most noteable architects helped create the Lewis and Clark County places including Link & Haire, Harry V. Wheeler, Joseph Hilger, et al. Arthur Sperry, M. Boardman, Benson, Ben, et al., Charles A. Reed, C.S. Haire and J.C. Paulsen. Prominent architectural styles found in Lewis and Clark Country are Late 19th And 20th Century Revivals, Late 19th And Early 20th Century American Movements and Late Victorian.