Reading Company C1a Class

The Reading Company C1a Class were a type of 4-4-4 steam locomotive built for the Philadelphia and [Reading Railway] in 1915. Four locomotives were built, road numbers #110-113. They used front and rear trucks that were effectively identical. During a year of operation from 1915-1916, they proved to be quite unstable; after that year, they were rebuilt to 4-4-2 "Atlantic" locomotives, reclassified as P7sa, and renumbered #350-353 they remained as Rebuilt 4-4-2 Atlantic Type locomotives from 1916 to the 1940’s. All 4 locomotives pulled passenger trains and some freight trains as larger and powerful steam locomotives were built in the 1920’s and 1930’s and 1940’s took over pulling passenger trains and all 4 locomotives were replaced by 1940 and 1949 and scrapped from 1941-1949.