I looked at some old photos of Portage, WI (where i am from) recently.

http://www.ci.portage.wi.us/vertical/Sites/{889D2199-3A6C-48F9-AB94-DE81D288EE40}/uploads/{8D7F7CC9-C532-4250-A1D6-633AB6539F15}.PPT#274,18,Slide 18

Looking at slide 18 amazed me. The entire time I lived in Portage (60s-70s) there was not a single black family there. Almost all European immigrants (and those mostly Norwegians, Swedes, Danish, Polish, and English) or native americans. It is a small town anyway - around 8,000 people while in the late 1800s it was actually larger. There is a picture of the police force (slide 18) and there is a black member of the force.

It was actually more diverse 50-100 years ago!

>>I think a lot of people started building their own homes (in the old days) and never finished. So most municipalities consider it an unfinished dwelling. I found this for the city of Oshkosh:
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>>City of Oshkosh Municipal Codes
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>T. Is that where Osh Kosh B'Gosh kids' clothes come from?
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>...