http://www.pewforum.org/2013/10/01/chapter-2-intermarriage-and-other-demographics/
 
http://www.detroitnews.com/story/news/politics/2016/12/12/records-many-votes-detroits-precincts/95363314/
 
http://bwog.com/2016/12/12/overseen-fake-book-found-on-stack-12/