See also: Pennell, James R. 2019. "Challenges and progress in improving the quality and identity of Midwest U.S. Wines." Journal of Wine Research, 30(1):1-14, DOI: 10.1080/09571264.2019.1573726
https://www.tandfonline.com/eprint/FQgVnKsX5A9fWsFEUpKQ/full?target=10.1080%2F09571264.2019.1573726

​Pennell, James R. 2017. Local Vino: The Winery Boom in the Heartland. Champaign, IL: University of Illinois Press.
https://www.press.uillinois.edu/books/catalog/77esr6pc9780252040740.html

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