The collection focuses on Rhyne family history, the history of the Mount Holly community, and the cotton mills owned and operated by the Rhyne family. Also included in the collection are numerous plot surveys and warranty deeds related to properties associated with the Rhyne family and its businesses. Highlights of the collection include the Civil War memoir of A.P. Rhyne; extensive research material related to the Rhyne family and the town of Mount Holly; and books related to cotton manufacturing and trade.