The Thomas Ford Memorial Library just received its 2007-2008 edition of Directory of Health and Human Services in Metropolitan Chicago. The reason I mention this is that the publication of this useful source has been somewhat erratic and not well-publicized in recent years, due to funding. We did not get one of the editions because we ordered too late and copies were all gone.
An online version is also available for $175. The print version is $100 plus $5 shipping. All the information is available at the Community Resource Network website. Use the drop-down menu to specifiy the edition you want.