Milwaukee Road depot at Yankton, South Dakota, undated. Milwaukee Road depot, photograph by Norm Keyes, from the Norm Keyes Collection.

Great Northern depot at Yankton, South Dakota, undated. Photograph by Robert Johnston, from the Norm Keyes Collection.

Great Northern depot at Yankton, South Dakota, undated. Relocated from its original site - used as a museum, photograph by Norm Keyes, from the Norm Keyes Collection.

Great Northern depot at Yankton, South Dakota, undated. Relocated from its original site - used as a museum, photograph by Norm Keyes, from the Norm Keyes Collection.

Great Northern depot at Yankton, South Dakota, undated. Relocated from its original site - used as a museum, photograph by Norm Keyes, from the Norm Keyes Collection.

Great Northern depot at Yankton, South Dakota, undated. Relocated from its original site - used as a museum, photograph by Norm Keyes, from the Norm Keyes Collection.

Great Northern depot at Yankton, South Dakota, undated. Relocated from its original site - used as a museum, photograph by Norm Keyes, from the Norm Keyes Collection.

Yankton, South Dakota Great Northern depot looking northeast March 1970. Photograph by Charles W. Bohi.