- Increasing Human Efficiency In Business: A Contribution To The Psychology Of Business
- The Theory of Advertising; a Simple Exposition of the Principles of Psychology in Their Relation to Successful Advertising
- The American Peoples Encyclopedia - Volume 8: Engraver Beetle to Freiligrath
- Influencing Men in Business: The Psychology of Argument and Suggestion
- Increasing Efficiency In Business; A Contribution to the Psychology of Business