Coleman, "Early Birds Survive the Exploration: Spring Exploration Theme is 'EBT Survivors'," p. Hart, "Adventures of an East Broad Top Railfan, part 1: First Visit, Reopening Weekend, August 1960," p. Keller, "From the Archives [Workman's Rockhill Furnace store]," p. Mellander, "Pennsylvania Short Lines in Color, vol. 1, by Carlson" review. Norris, "The Mt. Union Engine House" (HO), drawing (3/32 inch=1 foot), p.
Abbreviations denote the following features: g (graph), m (map), p (photograph), and s (sketch or non-photographic illustration).
