William W. Eastman, c.1890, one of the primary people responsible for the tunnel project.

Photograph of William Williams. Photo taken by a St. Paul Dispatch photographer in the county jail on April 13, 1905. Image reproduced from microfilm at the Minnesota Historical Society with permission from the St. Paul Pioneer Press.

Williams Arena c.1929, soon after completion.

Dakota people at the Williamson family home (Pajutazee Mission) near Yellow Medicine, 1862. Jane Williamson is the third from the right in this photograph taken on Sunday, August 17, 1862, the day before the US–Dakota War began. The photo was taken by visiting photographer Adrian Ebell. Pictured are, left to right: Margaret Poage Williamson, an unidentified child, Sarah Hopkins (Wanyahiyawin), Thomas Smith Williamson, an unidentified woman with a child, Robert Hopkins (Caskedan), Jane Williamson, Samuel Hopkins, and an identified woman.