Magney, Gottlieb R.; Tusler, Wilbur H.; Arnal, Leon E. "Display Device for Buildings (US patent 1806634)". granted May 26, 1931, filed February 1, 1929. assigned to W. B. Foshay Co., of Minneapolis, Minnesota. Retrieved August 15, 2007.
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news.minnesota.publicradio.org
Buzenberg, Bill (February 1, 2000). "Mr. Foshay's Legend". Minnesota Public Radio. Retrieved August 15, 2007.