Found this reference on the Google Book Search for the Hartshorn family. Anyone in the Darlington area interested in coal mining @ this time might find it of interest. _Click here: Report of Progress in the Beaver River... - Google Book Search_ (http://books.google.com/books?ie=ISO-8859-1&vid=LCCNgs07000750&id=N6yZx5bnfBc C&dq=Hartshorn&lpg=PA234&pg=PA235) Jean in CA