- Speeches, Lectures and Letters
- Qataban and Sheba: Exploring the Ancient Kingdoms on the Biblical Spice Routes of Arabia -1st Edition/1st Printing
- Review of Lysander Spooner's essay on the unconstitutionality of slavery: reprinted from the "Anti-slavery standard," with additions
- Qataban and Sheba:Exploring Biblical Spice Routes of Arabia - w/maps - Signed by author
- The Lost Arts