Neff, E. C. (1899). Addenda, Näf-Neff history, regarding the origin and meaning of the name of Neff: Together with the revolutionary records of Captain Rudolf Neff, English Aaron Scout, Major Thomas Smyth, Jr. Cleveland, O.: The Author.

Neff, Elizabeth Clifford. Addenda, Näf-Neff History, Regarding the Origin and Meaning of the Name of Neff: Together With the Revolutionary Records of Captain Rudolf Neff, English Aaron Scout, Major Thomas Smyth, Jr. Cleveland, O.: The Author, 1899.

Neff, Elizabeth Clifford. Addenda, Näf-Neff History, Regarding the Origin and Meaning of the Name of Neff: Together With the Revolutionary Records of Captain Rudolf Neff, English Aaron Scout, Major Thomas Smyth, Jr. Cleveland, O.: The Author, 1899.