- The Origins and Development of the English Language
- The Power of Thought : a Twenty-First Century Adaptation of Annie Besant's Classic Work, Thought Power
- Problems in the Origins and Development of the English Language
- British or American English?: A Handbook of Word and Grammar Patterns (Studies in English Language)
- Unlocking the Door: Studies in the Key to Theosophy: H.P. Blavatsky's Introduction to Theosophy and the Theosophical Society