Can anyone identify this pusher plane from apparently the 1930s?
That is a Stearman-Hammond Y-S1, registration NC15524, construction  number 309.
The remains of the aircraft are now owned by the Dutch aviation museum  Aviodrome. They are planning to restore one of the four Stearman-Hammonds they have into flyable condition. This project is running since 2007, and is progressing very slowly.

source: Smithsonian National Air and Space Museum