Studied archeology and anthropology at the Escuela Nacional de Antropologia, Univerisdad Nacional Autonoma de Mexico from 1942-1946.
B.A. degree, University of California, Los Angleles in 1950.
M.Sc. degree, University of Southern California, Los Angeles in 1952.
Ph.D. degree h.c., University of Tobingen, Germany in 1987.
Contributing editor, Handbook of Latin American Studies (Section Archaeology of Mesoamerica), Library of Congress, Washington, D.C. from 1961-1989.
Consultant in Mesoamerican Archaeology, Southwest Museum, Los Angeles, since 1960.Research Associate, Museum of Man, San Diego.Guest Curator, Bowers Museum, Santa Ana, California.
Member, Board of Directors, Ethnic Arts Council of Los Angeles, from 1965-1991.
Member, Advisory Committee for Pre-Columbian Studies at Dumbarton Oaks, Washington, D.C. from 1978-1981; Senior Fellow from 1981-1986.
Listed in National Directory of Latin Americanists (Library of Congress 1965, 1970, and 1985 eds.).Listed in Who's Who in the West (31st ed. 1972).
Membership: Society for American Archeology / Sociedad Mexicana de Antropologia, Mexico D.F.
Pre_columbian Art of Mexico and Central America (Abrams, New York 1968)
The Shaft Tomb Figures of West Mexico (Southwest Museum Papers 24, 1974)
Two Maya Monuments in Yucatan: The Palace of the Stuccoes at Acanceh and the Temple of the Owls at Chichen Itza (Southwest Museum 1985)
The John-Platt Collection of Pre-Columbian Art (the Bayly Art Museum, Univ. of Virginia, Charlottesville 1987)
Portrayal of Pathological Symptoms in Pre-Columbian Mexico (Southern Illinois University, Springfield 1986)
La Iconograpia de Teotihuacan: los Dioses y los Signos (Universidad Nacional Autonoma de Mexico, 2 vols. Mexico 1987)