| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Science of Symbols: Setting Forth the True Reason for Symbolism & Ritual, Their Relation to the Teaching of Christ, & Their Necessary Adoption by All Forms of Religious Expression | 978-1-141-54766-1 (1-141-54766-X) | 2010 |
| The Science of Symbols Setting Forth the True Reason for Symbolism and Ritual, Their Relation, to the Teaching of Christ, and Their, Necessary ... of Religious Expression | 978-1-330-23062-6 (1-330-23062-0) | 2018 |