Is this a railroad or a wagon bridge at Colbert's bridge across the Red River?

This photograph depicts "part of Satanta's Kiowa Band at Sutler's Store, Fort Sill, Indian Territory" by either Soule or Bliss.

In 1929, the U.S. legislature wanted to eliminate toll bridges across the Red River (and other places) due to scandalous behavior.

The Caddo structures were so numerous that Europeans who came to the Red River labeled southwestern Arkansas "Mound City."

Evidence of the Caddo City of the Dead along Ozan Creek at Washington, Hempstead County, Arkansas has been almost entirely eliminated.

Ozan in Hempstead County, Arkansas is a true City of the Dead, a place that connected to the Battle Mound village along the Red River.