Foundation for the Advancement of Mesoamerican Studies
Famsi: Soconusco Formative Project (2000)
Excavation at this site indicates no other occupation after Middle Formative period, a fact that will drive research in this area. Site includes photographs of artifacts as they are found.
Foundation for the Advancement of Mesoamerican Studies
Famsi: Bitumen Sourcing in the Olmec Region (2004)
Study suggests that chemical studies on bitumen (hydrocarbon material) is a feasible method of studying inter-regional trade and social networks. Includes a chart defining archaeological phases of the Olmec Culture.
Wikimedia
Wikipedia: Olmec
Wikipedia offers excellent information on the Olmec, a people living in south-central Mexico from 2300 BC to about 800 BC.