Hi Kathy,
Regarding your church question about Loomis and 149 Wabansia:
First of all, pre-1909, the address numbers in Chicago were all different from today. You either need an intersecting street or an adjusted address number to find where these places would be as of now.
So if you have an intersecting street with Loomis, it would be a help in my finding the closest parishes. As for Wabansia, I have a street address conversion guide but it's at home.
I have a lookup program that can take a post-1909 address and find the closest Catholic parishes. (I haven't figured out to put it on the net yet)
Hope I can help
Dan