"Categorical Imperative" by James F. Jackson Sheridan Wyoming Pine Ridge became a reservation

Pine Ridge became a reservation in 1889

of skirmishes with Crows

John Colter is known to history as probably the first white man to discover the region that now includes Yellowstone National Park

Allan Marden Rodeo Dance Poster

"Categorical Imperative" by James F. Jackson Sheridan Wyoming Pine Ridge became a reservationoil on wood panel (1985), 27" x 22" This piece is on display from March 13 through August 3, 2026 in James F. Jackson: Legacy in Art and Leather, a retrospective exhibition celebrating more than four decades of creative work by Wyoming artist James F. Jackson. Featuring paintings, carved and tooled leather, and works that merge both media, the exhibition traces Jacksons lifelong exploration of form, structure, and visual metaphor. https: