- Researches In Prehistoric And Protohistoric Comparative Philology, Mythology, And Archaeology: In Connection With The Origin Of Culture In America And The Accad Or Sumerian Families
- Sovereign And Quasi-Sovereign States: Their Debts To Foreign Countries (1878)
- Serpent and Siva worship and mythology
- A new and comprehensive dictionary of the English language; as spoken and written
- Examination of the Legend of Atlantis in Reference to Protohistoric Communication With America