Port Authority of New York and New Jersey Trans-Hudson River (PATH) electric locomotive 1203 emerging from a tunnel at New York, New York, circa 1985. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive

Builder photo of SP&S ALCO S-1 diesel locomotive Number 10 at Schenectady, New York in October 1941. Photo by the American Locomotive Company.

Builder photo of SP&S ALCO S-1 diesel locomotive Number 11 at Schenectady, New York in October, 1941. Photo by the American Locomotive Company.

Builder photo of SP&S ALCO S-2 diesel locomotive Number 25 at Schenectady, New York in December 1943. Photo by the American Locomotive Company.

Builder photo of SP&S ALCO RS-3 diesel locomotive Number 81 at Schenectady, New York in June 1953. Photo by the American Locomotive Company.

Builder photo of SP&S ALCO FA-1, 3,000 horsepower set Number 851 which consisted of 851 A-1 and 851 A-2. Photographed at Schenectady, New York in May 1948. Photo by American Locomotive Company.

Builder photo of 6,000 horsepower SP&S ALCO FA-2 6,000 diesel locomotive set Number 868 at Schenectady, New York in December 1950. Unit to the left is 868 A-2 followed by FB-2 868 B-2, FB-2 868 B-1, and FA-2 868 A-1. Photo by the American Locomotive Company.

Photo of Construction Number 5001 showing right rear of Wickwire Spencer Steel Company 60 ton Heisler Diesel Electric Locomotive at Buffalo, New York, undated.

Photo of Construction Number 5001 showing right rear of Wickwire Spencer Steel Company 60 ton Heisler Diesel Electric Locomotive at Buffalo, New York, undated. The locomotive is handling a string of gondola cars.

Photo of Construction Number 5001 showing right front of Wickwire Spencer Steel Company 60 ton Heisler Diesel Electric Locomotive at Buffalo, New York, undated. The locomotive is switching gondola cars loaded with pipe.