Conversation so far:
what was Federico fellini's first screenplay?
Knights of the Desert
what was Federico Fellini's first screenplay Knights of the Desert about?
The film was based on a novel by Emilio Salgari
What year did Federico Fellini make the screenplay for the film Knights of the desert?
in 1942

Question: Did he work on it by himself?
Self-contained rewrite: Did Federico Fellini work on the screenplay for the film Knights of the desert in 1942 by himself?