Ancestry.com: find census, birth, marriage, death records, newspaper & historical stories, photos, historical maps, and other media. (IN LIBRARY USE ONLY)
Fold3.com: find military information.
HeritageQuest Online (For Home Access you will need your library card number)
Vital Records at the Archives & Library of the Ohio History Connection: Birth, Marriage, & Death Records through Ohio History Connection
County of Williams County, Ohio, historical and biographical (1882)
Ohio History Connection: An evolving, dynamic online encyclopedia from the Ohio Historical Society.
Ohio Memory: Project to bring together digital versions of historical collections from more than 330 archives, historical societies, libraries, and museums.
Sanborn Fire Insurance Maps: Large scale street plans – including building outlines, property boundaries, and building use - produced by the Sanborn Fire Insurance Company from 1867 to 1970
History of Williams County, Ohio - W H Shinn (1905):
Williams County Genealogical Society
1904 Williams County Plat Book
Williams County Veteran Grave Interactive Dashboard
Standard History of Williams County Ohio by C.A. Bowersox
Center for Archival Collections: Bowling Green Ohio's center for Northwest Ohio history.