File:Etlatongo Orange-on-white Pottery.jpg

Orange-on-white pottery from Etlatongo.

In an effort to address questions concerning the geographic origin of Olmec-style artifacts — with implications concerning the geographic origins of Olmec culture — in March 2005 a team of archaeologists used INAA (instrumental neutron activation analysis) to compare over 1000 ancient Mesoamerican Olmec-style ceramic artifacts with 275 samples of clay so as to "fingerprint" the origin of that pottery.

• Rose, Mark (2005) "Olmec People, Olmec Art", in Archaeology (online), the Archaeological Institute of America, accessed February 2007.

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Although this photo under copyright by Jeffrey Blomster, inclusion here qualifies for Fair Use under US Copyright law because:

• It is used for a non-commercial and educational purpose.
• It is not possible to obtain a free copy because this pottery is not on display or otherwise accessible to the public.
• It is a photo of one of the roughly 1000 pottery pieces studied. Thus it accurately represents the study, but only 0.1% of the study.
• It should not affect the commercial viability of the copyright, which is negligible.