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.

Saint Paul and Pacific Steam Locomotive Number 1, Old Class 1 "Wm Crooks" with historic passenger cars at Duluth, Minnesota, undated. Photo from the Lake Superior Transportation Museum (postcard).

Saint Paul and Pacific Steam Locomotive Number 1 on display - "Wm Crooks" at the Lake Superior Transportation Museum, Old Class 1, at Duluth, Minnesota, 1898.

Northern Pacific steam locomotive 635 at Duluth, Minnesota, on July 11, 1916. Number 635 is a class C-20 built by Dickson in 1887. Photo by Charles R. Iles, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 602 at Duluth, Minnesota, in June 1916. Number 602 is a class N built by Baldwin in 1900. Photo by Charles R. Iles, J.M. Fredrickson collection. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 602 at Duluth, Minnesota, in June 1916. Number 602 is a class N built by Baldwin in 1900. Photo by Charles R. Iles, J.M. Fredrickson collection. Other Subject Classes: steam locomotive in roster photo