The character name "Boris Karloff" has the 'TM' symbol next to it, meaning it's trademarked.
The format of the end cast credits, headlined "A Great Cast is Worth Repeating," mirrors the way Universal gave their closing credits when James Whale was directing his horror classics.
The story of this motion picture is based upon certain, actual events and persons. However, some of the characters, incidents and names are fictionized.