Inline Images: 
Secretary Charles G. Abbot with Solar Boiler, South Yard, Smithsonian Castle, 1936.
Solar Shed in the South Yard, circa 1950s.
 Secretary Charles G. Abbot's solar cooker at Mt. Wilson, CA, circa 1920s.
Charles G. Abbot's solar panels being prepared for the NBC broadcast, 1936.
News broadcast of Secretary Abbot's Solar Invention, 1936.
Secretary Abbot and his solar powered invention, 1936.
Preparations for the solar broadcast, 1936.