- The Meaning of Meaning: A Study of the Influence of Language Upon Thought and of the Science of Symbolism
- Opposition: A Linguistic and Psychological Analysis
- Essays On Social Subjects
- Fecundity versus civilisation; a contribution to the study of over-population as the cause of war and the chief obstacle to the emancipation of women; ... to Germany, by Adelyne More [pseud.]
- The General Basic English Dictionary, giving more than 40,000 senses of over 20,000 words in Basic English