Pennsylvania Railroad class HH1s

The Pennsylvania Railroad's class HH1s comprised a single 2-8-8-2 type steam locomotive. Unlike most Pennsylvania Railroad steam locomotives, it had a wagon-top boiler. It was built by the American Locomotive Company (ALCO) in 1911. For 17 years, the single HH1s served as a helper until 1928. It had the road number 3396 and was subsequently scrapped after it was taken out of service in 1928.

HH1s class
Postcard depiction of Pennsylvania Railroad #3396.
Type and origin Power type Steam Builder ALCO Build date 1911
Specifications Configuration: ​  • Whyte 2-8-8-2 Gauge 4 ft 8+1⁄2 in (1,435 mm) Fuel type Coal Firebox: ​  • Type wagon-top Cylinders Four Valve gear Walschaerts Valve type Piston
Career Operators Pennsylvania Railroad Class HH1s Numbers 3396 Retired 1928 Disposition scrapped