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web.archive.org
"Herbert H Dow". Ohio History Center. Archived from the original on August 30, 2007. Retrieved April 5, 2007.
Folsom, Burton W. (May 1, 1997). "Herbert Dow, the Monopoly Breaker". Mackinac Center for Public Policy. Archived from the original on March 4, 2007. Retrieved April 5, 2007.