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Continue to ChatMiddlefield Post Office (historical) Map - Buchanan County, IA https://www.yellowmaps.com/usgs/topo.cfm?map=ia-2000061-middlefield-post-office-%28historical%29
Middlefield Post Office (historical) Map - Buchanan County, IA https://www.yellowmaps.com/usgs/topo.cfm?map=ia-2000061-middlefield-post-office-%28historical%29