Toepel, M. G.; Kuehn, Hazel L., eds. (1960). "Wisconsin's former governors, 1848-1959". The Wisconsin Blue Book, 1960 (Report). Wisconsin Legislative Reference Bureau. p. 73. Retrieved June 15, 2019.
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Toepel, M. G.; Kuehn, Hazel L., eds. (1960). "Wisconsin's former governors, 1848-1959". The Wisconsin Blue Book, 1960 (Report). Wisconsin Legislative Reference Bureau. p. 73. Retrieved June 15, 2019.