Some examples of Art Deco around the Quad Cities (not a lot of skyscrapers though)
Rock Island High School.
Details, Rock Island H.S.
5th Ave. Building, Moline, IL
Details, 5th Ave. Building.
Signage, Davenport, IA
Adler Theater and Mississippi Hotel, Davenport, IA
Inside the Adler
Details
Lobby Ceiling