- Environmental scienceMichael L. McKinney, Robert M. Schoch et al.
- Forgotten civilizationRobert M. Schoch
- Pyramid questRobert M. Schoch
- Voyages of the pyramid buildersRobert M. Schoch
- Darklore Volume IGreg Taylor, Michael Prescott et al.
- Environmental ScienceRobert M. Schoch
- Vertebrate paleontologyRobert M. Schoch
- Origins of the SphinxRobert M. Schoch, Robert Bauval
