Thanks again for your prompt response and insight. It's interesting to hear other's views about genealogy and how things tended to occur.
Too bad about the 1870 census. I will take your advice and see if I can't find something out on the web. Worse come to worse, I will see if I can't get the microfilm through the Jesus Christ of Latter Day Saints location (albeit time consuming).
Take care! Let me know if you need anything regarding the Chicago area.