AZL Rio Grande Alco PA1/PB1

The ALCO PA was a family of A1A-A1A diesel locomotives built to haul passenger trains built in Schenec-tady, New York by the American Loco-motive Company (ALCO) between September 1946 and December 1953. They were of a cab unit design, and both cab-equipped lead A unit PA and cabless booster B unit PB models were built