A map of Wiconisco Township from 1862, with the operations of the Lykens Valley Coal Company shown in Bear Gap between Short Mountain, Coal or Thick Mountain, and Big Lick Mountain, Dauphin County, Pennsylvania.
The Lykens Valley Railroad is shown extending north, just east of Lykens and west of Wiconisco, into the Bear Gap. Facilities of the Lykens Valley Coal Company and Short Mountain Coal Company noted on the map include an engine house, a machine shop and a coal pit.
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