Before Abraham Lincoln was elected president he served in the Illinois legislature and practiced law in Springfield. Abraham Lincoln is buried just outside Springfield at Lincoln Tomb State Historic Site.
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The abbreviation "ORD" for Chicago's O'Hare airport in Illinois comes from the original name Orchard Field. O'Hare Airport was named in honor of Lieutenant Commander Edward H. "Butch" O'Hare.
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The round Silo for farm storage of silage was first constructed on a farm in Spring Grove, Illinois.