IDEA, 1940s

In the 1940s, these were the sources of ideas for movies: "Play," "Short Story or Novel," "Newspaper Story or Current Event," "Original Story," "Magazine Article," or "Historical Incident."
On another note: this particular flowchart is one of the few places the words "Restaurants," "Mimeograph," "Arsenal," "Publicity," and "Bits & Extras" fit together so well. From the 20th Century Fox flowcharts collection.

The Infomercantile
Via