The Basis of Social Relations: A Study in Ethnic Psychology

The Güegüence; A Comedy Ballet in the Nahuatl-Spanish Dialect of Nicaragua

The Ancient Phonetic Alphabet of Yucatan

The Arawack Language of Guiana in its Linguistic and Ethnological Relations

Races and Peoples: Lectures on the Science of Ethnography

The Pursuit of Happiness: A Book of Studies and Strowings