There was no steam on the Mount Washington Cog Railway in Bretton Woods, NH, on the day I visited, so I contented myself with getting some shots of the first cog railway engine in the world.
The engine was built by Campbell & Whittier in Roxbury,
MA, as #1. Initially named "Hero", it was employed building the line up Mt Washington. In 1867, the engine was
renamed "Peppersass", apparently because its upright
boiler suggested a bottle of pepper sauce. Pronounced with
a New England accent, "sauce" became "sass", and the
name stuck. It was retired from active service in 1878 and at some point was sold to the Baltimore & Ohio Railroad, who donated it to the State of New Hampshire in 1929.
Technically, with a 4’ 8” gauge, this is a narrow gauge locomotive (½” less than standard gauge). It weighs 16,000 lbs, has 15” drivers, 8” x 12” cylinders and, with the fuel and water bunker built on the chassis, making it an 0-2-2T type locomotive.
The three mile long Mount Washington Cog Railway opened to the public on 14th August 1868 and was the world's first mountain-climbing cog railway.