Northern Pacific roundhouse at Duluth, Minnesota, August 15, 1961.

The Northern Pacific Depot at Duluth, Minnesota, circa 1960. The second depot is pictured, from the Northern Pacific Railroad Historical Association Collection.

The Northern Pacific Depot at Duluth, Minnesota, circa 1960.

The Northern Pacific Depot at Duluth, Minnesota, circa 1910. The second depot is pictured.

The Northern Pacific Depot at Duluth, Minnesota, circa 1910. The second depot is pictured.

Passengers wait for na arrival at the Dryad, Washington depot circa 1920. Located at Milepost 16.3.

Great Northern depot at Duluth, Minnesota, undated. Used as a museum when photographed, photograph by Jack Porzig, from the Norm Keyes Collection.