^State Highway Commission of Wisconsin (1951). Official Highway Map of Wisconsin(PDF) (Map). 1:887,040. Madison: State Highway Commission of Wisconsin. Retrieved December 22, 2020 – via Wikimedia Commons.
^United States Geological Survey (1984). Manitowoc County, WI (Map). 1:100,000. Reston, Virginia: United States Geological Survey. Retrieved December 22, 2020.
^Wisconsin Department of Transportation Division of Highways (1987). Wisconsin Highway Map (Map) (1987–1988 ed.). 1:823,680. Madison: Wisconsin Department of Transportation. OCLC314276560, 17746029. Retrieved December 22, 2020 – via American Geographical Society Library Digital Map Collection.