A list of members of ...?
Please clarify your question.
One could find a list of the Chicago suburbs online at several different sites. Most governmental websites would have that information. City directories and maps would also have that information.
There are a number of resources that one can use to find a list of free things to do in Chicago. For instance, Enjoy Illinois, National Geographic, and Things to do in Chicago all list free things to do in Chicago.
You can find a list of cheap hotels in Chicago online, in Chicago, or by asking friends, family and locals! You can also simply walk into a Chicago hotel and ask!
Chicago sports teams will list their schedules on their individual websites. Alternative sources would be WGN's sports department, the Chicago Tribune, and the Chicago Sun Times.
A local search would provide a comprehensive list of auto body shops in the Chicago area. If you can't find what you want there, you can try Yellow Pages.
There are several online websites on which a list of new restaurants in Chicago can be found. Try checking out chicagomag, timeoutchicago and chicagofoodmagazine.
http://en.wikipedia.org/wiki/95th_United_States_Congress go down to 'members'
I would start my search at www.aparments.com. there list is very comprehensive. You can also find some good listings in the clsifieds of the Chicago Tribune.
The best place to check online for a list of car showrooms in Chicago is AutoTrader. The company called AutoTrader lists car dealers and showrooms in any area including Chicago.
I can't guarantee this list has every single organization in Chicago, but it does seem to have a large number of organizations listed: http://www.volunteermatch.org/search/orgs.jsp?l=Chicago&k= .
One can find such a listing in their local Chicago phone book. Alternatively, such a list can also be found online at the web domain "ChicagoRealtor."
One can find a listing of house rental prices in Chicago by going using craigslist.com and selecting Chicago from the list of cities provided. There is a column for rentals. An alternative is to access Chicago newspapers on-line; refdesk.com provides a list of US newspapers by state.