Great Northern Steam Locomotive 2503, a Class P-2, Mountain 4-8-2, built by Baldwin Locomotive Works in 1923, 29"x28" cylinders, 73" drivers, 210 psi steam pressure, 365,600 pounds weight, 54,823 pounds tractive effort, one of 28 engines in this class, excellent in either freight or passenger service at an unknown location. A David Emerson photo, undated.

Great Northern steam locomotive 2503 at Superior, Wisconsin on August 19, 1954. Class P-2. Norm Priebe Collection. Photograph by B. Black. Black & white negative, 2 1/2 inch x 4 1/4 inch. Other Subject classes: Steam locomotive

Great Northern Steam Locomotive Number 2503 with passenger train, Class P-2, at Saint Paul, Minnesota, 1948.

Great Northern Steam Locomotive Number 2502, Class P-2, with passenger train, undated. Photo by Ron Nixon.

Great Northern steam locomotive 2502 at Saint Cloud, Minnesota on May 6, 1956. Class P-2. Norm Priebe Collection. Photograph by Vierkant. Black & white negative, 2 7/8 inch x 4 3/4 inch. Other Subject classes: Steam locomotive

Great Northern Steam Locomotive Number 2502 at Portland, Oregon, 1947.

Great Northern Steam Locomotive 2501, Class P2, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive Number 2501, Class P-2, undated.

Great Northern Steam Locomotive 2501, Class P2, undated. Photograph by Wade Stevenson.

Great Northern steam locomotive Number 2501, a 4-8-2, at Minneapolis, Minnesota, in October, 1948.