Tucson, Arizona is applying to UNESCO to be North America's first Creative City of Gastronomy.  As explained in the article, for the application, the city needed to explain the unique cultural heritage of Tucson and how it relates to its food culture from prehistoric times to present.  Evidence from archaeological sites was utilized along with ethnographic research.  For those of you interested in local heritage and food culture, this is an interesting read.

http://www.tucsonweekly.com/tucson/the-road-to-unesco/Content?oid=5983515

~Tylia