Margaret Graham and Russell Skowronek, “Chocolate on the Borderlands of New Spain,” International Journal of Historical Arachaeology 20/4 (Dec. 2016): 645-665. Another article co-authors by the same anthropologists:

Skowronek, Russell K. and Margaret A. Graham 2012 Wine and Alcohol on the Alta California Frontier. Boletín 28 (1&2): 22- 32.

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