Additional info:

http://www.idph.state.il.us/vitalrecords/adoption_faq.htm

This one is specific for state of illinois also:

http://www.childwelfare.gov/systemwide/laws_policies/state/i...

I saw on TV within the last month or so that the state of IL, either did or was trying to pass, a law making adoption records available to those concerned.

Hope the above sites help... good luck to you!!
Barbara