Philipp Johann Josef Valentini – författare

Olmecas and the Tultecas. A Study in Early Mexican Ethnology and History

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 Manuscript

Mexican Calendar Stone

Katunes Of Maya History. A Chapter In The Early Chronology Of Central America, With Special Reference To The Pio Perez Manuscript

Katunes Of Maya History. A Chapter In The Early Chronology Of Central America, With Special Reference To The Pio Perez Manuscript