King of the Rocket Men (1949)
Features Rocket Man
Roger Ebert mentions the serial (calling it "Rocket Men on the Moon").
Anne talks about going to the chapter play serials at the movies.
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.
Helmet is used in both films prominently
The rocket man from this film is painted all over one of Heidi's walls.
Uses a clip from it.
Scene with Mae Clarke seen in theater by
Jakob Stegelmann reflects on events from past century episodes of Troldspejlet, mentioning this serial + clip shown