There is an amazing site where you can quite literally find rare, old, or out-of-print books. It is really an antiquarian's and genealogists dream site. I found a number of rare and old books there re Pennsylvania (Tyrone of Today, both editions) and The History of the Susquehanna and Juniata Valleys (published in 1886, original ). They have old, out of the way, little bookstores from all over the world (as well as antiquarians who sell old books out of their homes) list their titles at this site and you can order through the site or email the seller directly. Fabulous site. Very efficient and very good. Definitely worth checking out if you are searching for old books, especially re genealogy. It's called www.abebooks.com Good luck, Sue