Fictional story elements introduced in 1939

fictional city in the DC Universe, best known as the home of Superman

science fiction device in Asimov's work

Syldavian is a fictional West Germanic language created by Hergé as the national language of Syldavia, a fictional Balkan kingdom that serves as a major setting in many of The Adventures of Tintin stories. Hergé modeled the language on Brusselian, a dialect of Dutch spoken in and around Brussels. The entire corpus of the language has been analyzed by Mark Rosenfelder.

In the Marvel Comics multiverse, Earth-616 is the primary continuity in which most Marvel Comics titles take place.

any of several pairs of shoes worn by Judy Garland and stunt doubles portraying Dorothy Gale in the 1939 film The Wizard of Oz