SOUTHERN PACIFIC CLASS AC-8

Southern Pacific Railroad's 'AC-8' class of cab forward steam locomotives was the fifth of SP's 4-8-8-2 classes. They were built by Baldwin Locomotive Works in 1939.
The AC-8s were the first to receive the larger redesigned cab windows as standard equipment that were retrofitted onto earlier AC class locomotives. The locomotives were only slightly larger than their AC-7 predecessors.
The first AC-8 entered service on August 18 1939, and the last on November 26 1939. Number 4173 was first to be retired from active service on September 2 1954, while 4172 was the last on January 9 1958. All of these locomotives were scrapped, beginning with 4155 on November 26 1954, and ending with 4172 on April 24 1959.

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References

References

★ Southern Pacific Company Steam Locomotive Conpendium, Diebert, Timothy S. and Strapac, Joseph A., , , Shade Tree Books, 1987, ISBN 0-930742-12-5