It looks like much of the Sun-Times archive is being sold off on ebay.
http://shop.ebay.com/suntimesphotoarchive/m.html?_nkw=&_armrs=1&_from=&_ipg=&_trksid=p3686There's a lot of interesting stuff in here - a lot of transit-oriented stuff too. Don't forget to check the completed listings too.
I don't know if these are "duds" or duplicates or what, but it seems like they should be in a museum collection.