I found a cache of 323 pictures of Detroit buildings, mostly industrial in the Canadian Centre for Architecture's online collection. You can click on the online collection once you are on the page.
good viewing!
http://www.cca.qc.ca/en/search?q=detroit
This is a rear view of the Police HQ in 1921;
http://svrdam.cca.qc.ca/ZooMI/Defaul...bj=PH2000:0597
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