When Mel Brooks was preparing for this film, he discovered that Ken Strickfaden, who had made the elaborate electrical machinery for the lab sequences in the Universal Frankenstein films, was still alive and living in the Los Angeles area. Brooks visited Strickfaden and found that he had stored all the equipment in his garage. Brooks made a deal to rent the equipment and gave Strickfaden the screen credit he did not receive for the original films.
Find more behind-the-scenes facts at IMDb Trivia: Young Frankenstein (1974).
The Devil's Muse 