Miscellaneous References and MentionsWhile our initial information about Polk City came from various goverment sources (GNIS, US Census, FIPS), we also found mention of Polk City in various books, maps and other sources. We've created the following list to keep track of the sources that proved useful in adding to our knowledge about Polk City. We hope that they will be useful to you. Note: When we started collecting data about Polk City, we were inconsistent about keeping track of where that data came from. As a result, this list of references and mentions is probably incomplete. Iowa State Gazetteers
List of Post Offices in the United States (1870)
SPV's Comprehensive Railroad Atlas of North America - Prairies East & Ozarks
Sixth Biennial Report of the State Mine Inspectors, Two Years Ending June 30, 1893
Shell Oil Road Map for Iowa (1956)
Polk City is contained in a comprehensive list of Post Offices that was created by Cameron Blevins and Richard Helbock.<1> We found Polk City in these Censuses: 2010-1990. See our Census Page for Polk City for more information. Both the GNIS and FIPS databases contain entries for Polk City. See our Misc Page for Polk City for more information. Footnotes ...
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