- A History of the Clan Maclean From Its First Settlement at Duard Castle in the Isle of Mull, to the Present Period Including a Genealogical Account of Some of the Principal Families Together With Thei
- The Mound Builders; Being an Account of a Remarkable People That Once Inhabited the Valleys of the Ohio and Mississippi, Together with an Investigation Into the Archaeology of Butler County, O.
- Renaissance of the Clan MacLean: Comprising Also a History Od Dubhaird
- Mastodon, Mammoth, And Man
- A critical examination of the evidences adduced to establish the theory of the Norse discovery of America