Historic Flight in Spokane, Washington, has a collection of important aircraft produced between 1927 and 1957. All aircraft are fully restored and can be flown. One of the displays in this museum features vintage flying helmets.
Evergreen Aviation: Flight helmets (photo diary)
Olympic Flight Museum: Aviation Uniforms (Photo Diary)
Museums 101: 1930s Biplanes (Photo Diary)
Historic Flight: Beaver airplanes (photo diary)
WAAAM: Early Airplanes (Photo Diary)
Stonehenge Air Museum: Monoplanes (Photo Diary)
Museums 101: Vintage Aircraft in the Museum of Mountain Flying (Photo Diary)
Yanks Air Museum: Observation Aircraft (Photo Diary)