Exploring Mesoamerican Archaeology: The Olmec
Student paper by Amy Deuink including an overview and annotated bibliography.

National Geographic Magazine: August 1996
Felipe Dávalos studies the colossal heads at the Olmec site of San Lorenzo in 1967. Taking careful measurements and notes of each detail, Dávalos drew every monument from four sides (above, right). Most scholars believe the sculptures are portraits of important rulers of Mesoamerica's first civilization.