A Pronouncing and Etymological Dictionary of the Gaelic LanguageDerick S. Thomson · First published 1980Open the Tome
The Companion to Gaelic Scotland (Blackwell reference)Derick S. Thomson · First published 1987Open the Tome
Freedom and the Eagle (Clo-bhualaidhean Gairm ; leabhar 50)Derick S. Thomson · First published 1977Open the Tome