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Cites

http://1940s.org/from-the-1940s-decade-famous-first/

http://inventors.about.com/od/timelines/a/modern.htm

http://dcmovies.wikia.com/wiki/Superman_(1940s_Animations)

http://www.library.hbs.edu/hc/nd/contemporary-leaders/polaroid-instant-camera/index.html

http://imagizer.imageshack.us/a/img839/7372/evolutions

http://www.swide.com/sport-man/luxury-car/top-10-cars-of-the-1950s-from-fiat-500-to-cadillac-eldorado/2012/12/02

http://www.computer50.org/kgill/mark1/mark1.jpg

http://www.huffingtonpost.com/2014/03/27/pet-peeves_n_5021332.html

http://www.bonterrasolar.com/news-archive/solar-panels-save-money/