Primarily letters from Nicholas Harris, a lawyer in Belvidere, Warren Co., NJ., to Henry J. Aten. Harris was apparently assisting Aten with his research of the Aten family. Letters also discuss social subjects, the weather, and Harris's activities. Also included are Aten family documents copied by Harris, clippings, and a photocopy of the genealogy begun by Aten and continued by the Aten family after his death.