The Illinois Blue Book is one of the most comprehensive sources of state government information. It is a nationally recognized source for information about Illinois' executive, judicial and legislative branches of government. Originating in 1861 as a privately published roster of legislators, the Blue Book has evolved into a historical publication complete with biographies, articles, illustrative photographs and helpful information for Illinois citizens. Recent issues of the Blue Book also include lists of toll-free state telephone numbers and updated listings for Illinois news media - including contact information.