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

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

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

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

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

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

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.