Pleasant Valley Township, Johnson County, Iowa (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Pleasant Valley Township, Johnson County, Iowa" in English language version.

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1nationalmap.gov

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1books.google.com

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books.google.com

History of Johnson County, Iowa, Containing a History of the County, and Its Townships, Cities and Villages from 1836 to 1882. 1883. p. 753.

nationalmap.gov

edits.nationalmap.gov

U.S. Geological Survey Geographic Names Information System: Pleasant Valley Township, Johnson County, Iowa