Greencastle Township, Marshall County, Iowa (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Greencastle Township, Marshall County, Iowa" in English language version.

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1nationalmap.gov

420^th place

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archive.org

The History of Marshall County, Iowa: Containing a History of the County, Its Cities, Towns, &c. Western Historical Co. 1878. pp. 341.

nationalmap.gov

edits.nationalmap.gov

U.S. Geological Survey Geographic Names Information System: Greencastle Township, Marshall County, Iowa