States: Ohio: Williams
The Williams County Public Library in Bryan has an outstanding genealogy section, including cemetery books for all the local cemeteries, extensive marriage records, obituaries, and indexes of estate records, etc. held by the local courthouse.
Here's a link to their web site: http://www.williamsco.lib.oh.us/html/genealogy.html
The Williams County Genealogical Society, another great source for local information, can be found at: http://www.geocities.com/wmscogen/index.html