There are other ways, but the Manassas Library (Bull Run Library) has a great genealogical and historical room called the Relic Room. The head librarian is a fellow named Don Wilson. He and his staff are very helpful. I would start by contacting Don. I don't have the phone number at the moment but if you look up Prince William on GenWeb, the address and phone number of the library is given there as well as other PW resources.-Dale Mueller