IL BlueBook Website: https://www.cyberdriveillinois.com/publications/illinois_bluebook/home.html
IL Congressional Districts: https://www.cyberdriveillinois.com/publications/illinois_bluebook/congressdistricts.pdf
116th Congressional Delegation: https://www.cyberdriveillinois.com/publications/illinois_bluebook/116thcongress.pdf
IL at a Glance: https://www.cyberdriveillinois.com/publications/illinois_bluebook/ilglance.pdf
IL Handbook: https://www.cyberdriveillinois.com/publications/handbook/home.html