Like most airplane museums, the Erickson Aircraft Collection in Madras, Oregon has exhibits of model airplanes.
Museum of Flight: World War II model airplanes (photo diary)
Museum of Flight: World War I German airplane models (photo diary)
Air Force Museum: Cold War Soviet models (photo diary)
Historic Flight: Model airplanes (photo diary)
Planes of Fame: Model Airplanes (Photo Diary)
Museum of Flight: World War I French and British airplane models (photo diary)
Air Force Museum: Model airplanes, part 1 (photo diary)
Air Force Museum: Model airplanes, part 2 (photo diary)