Researching Chicago Family Trees

I'm becoming quite the whiz at researching families from Chicago and the Chicago area. There are so many resources available online now, that it just makes it so much easier to do. Here are some great links I use on a regular basis with my research:

Cook County, Clerk of the Circuit Court

Index to Naturalizations-Declarations of Intention, 1871-1929

http://198.173.15.34/NR/

Cook Count Clerk's Office - Genealogy Online

http://www.cookcountygenealogy.com/

Databases at the Illinois State Archives

http://www.cyberdriveillinois.com/departments/archives/databases.html

A Look At Cook

Street and ED Guide for Census for Cook County

http://alookatcook.com/

Polish Genealogical Society of America

http://www.pgsa.org/

FamilySearch & RecordSearch

http://www.familysearch.org/