Rau, William Herman, 1855-1920 (photographer), Lehigh Valley Railroad Company (contractor)
Description
Lantern slide no. 557 showing a gravity railroad established in 1827 to move passengers and coal from the mines at Summit Hill to a canal at Mauch Chunk. By 1840, stationary steam engines wre being used to haul cars up two inclined planes; one at Mount Pisgah, directly above Mauch Chunk, and another at Mount Jefferson near Summit Hill.
