- A Grammar of the Iberno-Celtic, or Irish Language - Primary Source Edition
- An Essay on the Antiquity of the Irish Language: Being a Collation of the Irish with the Punic Language
- Collectanea De Rebus Hibernicus: Vallancey, C. the Uraikeft, Or Book of Oghams. an Essay On the Origin of Alphabet Writing. Terms of the ... Origin of the Feudal System of Government
- Prospectus of a Dictionary of the Language of the Aire Coti, or Ancient Irish
- An Essay on the Primitive Inhabitants of Great Britain and Ireland - Scholar's Choice Edition