These cars were seen on railroads across North America. Harriman cars were developed during the time of Edward Henry Harriman, who controlled the Chicago & Alton Railroad, the Union Pacific, the Southern Pacific, the Illinois Central, the Central of Georgia, the Pacific Mail Steamship Company, Wells Fargo Express Company, and directed the development of the "Common Standard Specifications" among the Associated Lines. This set of specifications allowed parts to be shared across all Harriman-controlled railroads, allowing economical bid prices due to the sheer size of standardized orders, standardized part inventories and methods for car repair.

These cars were designed with the a distinctive arched roof and diamond underframe crossbearers. The Arched Roof construction handled rainy weather better than clerestoy design - once lighting and ventilation problems were solved. Non-Harriman Arched Roof cars, while similar, had fished-belly underframes developed by Pullman Mfg. Co. and copied by others.  Some of these 60-ft cars remained in use until the advent of Amtrak while others became maintenance-of-way cars.

The Southern Pacific Railroad ordered 60-ft Common Standard steel baggage cars from Pullman in 1909 through 1914. Car no. 6340 is a 1909 Pullman product, Class 60-B-2. Car no. 6201 is 1911 Pullman originally assigned to Central Pacific, Class 60-B-4. The star denotes improved facilities for the baggage - express crew. Car no. 6349 is Class 60-B-3, 1910 Pullman which was originally assigned to SPLA&SL.

• Extra fine details,
• crisp paint & printing,
• sliding baggage doors,
• nicely weighted for the runner,
• new adjustable draft gear and 6-wheel truck with 36" metal wheelsets,
• MT Couplers.