The Museum and the organization grew, and larger quarters were needed. At the same time the officers were making plans to change the name of the organization and broaden the geographic focus of the society to include the larger area of both the upper Conestoga Creek Valley and the upper French Creek Valley. Tri-County Heritage Society has established a local history reference and genealogy library at their 8 Mill Road address. This library has been in operation since 1989. The library collection includes over one thousand books, magazines, journals and other publications.
Information is organized as history or genealogy.
The genealogy is accessed topically, alphabetically by surname, or as property files. There is a collection of electronic resources with searchable information and available computers for patrons use. A few large private family collections and a number of small individual collections add to the library's resources. When finished the building will be the home of the Tri-County Heritage Center. It will house the Museum, the Library, and the offices of the Tri-County Heritage Society.