Passenger Car, Lightweight, ACF, RPO

History: In the post-war period, passenger rail service boomed. In order to increase efficiency, the railroads set to replacing their old wood, steel and concrete heavyweight passenger cars with newer lightweight, streamlined cars. The new cars were made from stainless steel, aluminum and Cor-Ten steel. These cars required less motive power to pull and were cheaper to manufacture. Production was also concentrated in a few manufacturers rather than each railroad making its own. This led to standardization which further reduced costs. The new "lightweight" cars were also given "streamlined" designs to make them more visually appealing. Budd, Pullman Standard and ACF were all well known manufacturers of these cars.

A railway post office, commonly abbreviated as RPO, was a railroad car that was normally operated in passenger service as a means to sort mail en route, in order to speed delivery. The RPO was staffed by highly trained Railway Mail Service postal clerks, and was off-limits to the passengers on the train.

This particular prototype represents the AC&F RPO-baggage built for GN in 1950-51 as series 37-42. It has a 60’ RPO compartment, with 5 windows and 2 doors, and a third door for the storage / baggage section. See here for more details.

Read more about RPOs on Wikipedia

Railroad/Company: ACF Industries LLC originally known as The American Car and Foundry Company and was formed in 1899. In 1955 ACF Industries, Incorporated became the new name for The American Car and Foundry. Over the years railcar manufacturing and leasing were the major forces in ACF's economic growth and stability. ACF has weathered many changes and is still committed to the manufacture of new railcar and railcar parts and sub-assemblies. ACF Industries LLC became a successor to ACF Industries, Incorporated on May 1, 2003.

ACF Industries LLC is a leader in the manufacture and fabrication of specialty railcar parts and miscellaneous steel products. While the Company's primary purpose is to compliment the new car and repair car market, it also provides manufacturing support to other manufacturers of steel products.

ACF Industries LLC is headquartered in St. Charles, Missouri and our manufacturing facility is located in Milton, Pennsylvania.

From the company website.