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Maps can provide fun and interesting way to research your ancesstors. Historical Plat Maps frequently show ownership of land. The following links include a variety of sources for your research.
David Rumsey Map Collection
http://www.davidrumsey.com
Historic Map Works
Use search box type “county, state Plat Map” for example.
http://www.historicmapworks.com/
University of Iowa Libraries
Use their search box “county name Plat Map” for example.
http://digital.lib.uiowa.edu/maps/
Sanborn Map Abbreviations
http://www.newberry.org/sites/default/files/researchguide-attachments/sanbornabbrv.pdf
Atlas of Historical County Boundaries
http://publications.newberry.org/ahcbp/index.html
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