Most Popular Books
- The Landa Alphabet: A Spanish Fabrication
- Vortag über den mexicanishen Calender-Stein.
- Mexican Copper Tools: The Use of Copper by the Mexicans Before the Conquest, and the Katunes of Maya History, a Chapter in the Early History of Central America, with Special Reference to the Pio Perez
- The Katunes Of Maya History. A Chapter In The Early Chronology Of Central America, With Special Reference To The Pio Perez Manuscript
- Vortag über den mexicanishen Calender-Stein (German Edition)
