The Historical Society Library holds a variety of unique materials awaiting discovery. Letters, diaries, Civil War records, maps, genealogies, and books on local subjects all are available for use by historians and genealogists.
Knowledgeable staff are available to assist patrons.
Published indexes to land patent records from 1679-1783 are available, as well as immigration and migration records, and some church and other records from the adjoining states of Pennsylvania and Virginia. Genealogists will want to search the library's family history files and published family histories. Historians will find extensive vertical files on a variety of county-related subjects, as well as published volumes, and a manuscript collection that include documents of the Potomac Home Brigade, business records and diaries, and the papers of a few notable local families. An extensive photograph collection is also housed in the library. Print a copy of our Genealogy Form .