Ditkaland dispatches: why Chicago should rethink its 80s nostalgia, Chicago Bears
Happy Birthday William Perry
History of the Chicago Bears - Wikipedia
Da Refrigerator - William Perry Career Highlights
William Perry T-Shirts for Sale
Ditka: Monster of the Midway - Armen Keteyian - Google Books
Sullivan: It's 2034, and the Chicago Bears are finally moving to Arlington Heights. Here's how it (hypothetically) happened.
Monsters of the Midway” and '80s defense featured on Bears all-time team — Inside The Hashes