This book, "History of Pittsburgh and environs. from prehistoric days to the beginning of the American revolution. Volume 4", by George Thornton Fleming, American Historical Society, is a replication of a book originally published before 1922. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.