Two online resources to begin studying rail history are the PA state archives at http://www.phmc.state.pa.us/overview.asp?secid=1 . Click on the search engine in the lower right and enter railroad history. At http://spec.lib.vt.edu/railroad/rrintro.htm there is an introduction to manuscript sources for railroad history in the special collections of the digital library and archives. Carolyn Stone Montpelier, Vermont