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Flag and seal of Illinois - Wikipedia
Flag of Illinois | Meaning, History & Redesign | Britannica
Illinois Flag Commission - Illinois Secretary of State
Flag of Illinois - State Symbols USA
Flag of Illinois - Simple English Wikipedia, the free encyclopedia
State Symbol: Illinois State Flag - museum.state.il.us
Illinois - TheFlags.org
Flag of Illinois - Flagpedia.net
Illinois State Flag – 50states
The History Behind the Illinois State Flag - Flags USA