Family papers, letters, wills, and deeds of the Chapman Family of Maryland and Virginia.

This collection consists of three series related to the McKnight, Piercy, and Jacobs families. In each series there are sub-series of letters, legal documents, and genealogical materials. Contents also include military records, harbor and ballast master papers, an 1849 inaugural ball invitation, and miniature portraits of William P. McKnight and Margaret Jacobs. McKnight correspondence relates to the Civil War.