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

Great Northern depot at Sioux Falls, South Dakota, undated. Photograph by Harold Hall, from the Norm Keyes Collection.

Sioux Falls, South Dakota Great Northern depot, track side view, waiting room end, brick and stone construction, Walter Ainsworth photo, undated.

Great Northern depot at Sioux Falls, South Dakota, undated. Photograph by Norm Keyes, from the Norm Keyes Collection.

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

Viborg, South Dakota Great Northern depot looking northwest in August 1968. Photograph by Charles W. Bohi.

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

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

Vienna, South Dakota Milwaukee Road-Great Northern depot looking northwest. The Milwaukee Road track is in the foreground, the Great Northern track is in the background. Photograph taken in August 1966 by Charles W. Bohi.

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