King of the Rocket Men (1949)
Helmet is used in both films prominently
The hovering robots at the end of the film have controls on their chest plates, similar to those in King of the Rocket Men. Kevin Conran (Sky Captain production designer) credits the serial as the source of where he got the idea.
Roger Ebert mentions the serial (calling it "Rocket Men on the Moon").
Anne talks about going to the chapter play serials at the movies.
Uses a clip from it.
Scene with Mae Clarke seen in theater by