Two references on railroad archaeology that come to mind immediately are: Rossillon, Mary P., 1984, The Curencanti Archaeological Project: The Archaeology of Marion, an Historic Railroad Camp in Curecanti National Recreation Area, Colorado. Midwest Archeological Center, Occassional Studies in Anthropology No.9, Lincoln, Nebraska; and Harcourt, James P., 1992, The Ties That Bind, An Archaeologist Looks At The Railroad, FIELDNOTES Newsletter of the Arkansas Archeological Society 246:5-9 (May/June).