That's a nifty little factoid,
Jungmann.
For those of you who don't know the screenwriter, Dalton Trumbo. He was one of the 'Hollywood 10' who refused to testify before HUAC (House Un-American Activities Committee).
He was sentenced to a year in federal prison for contempt of Congress but was released after 10 months.
Here he is with his wife Cleo at the HUAC hearings. (1947)
wikicommons
.