Quasi Interesting Paraphernalia: Monster Old Maid

In 1964 The Milton Bradley Company released a set of cards featuring the Universal Monsters. The age range for this game: 5 - 10. Nineteen monster-themed cards are included in the set with an additional instruction card. Characters in the set include Dracula, Frankenstein, The Wolf Man, The Werewolf + Teenage Werewolf, The Phantom of the Opera, The Mummy & The Hunchback of Notre Dame. One would think the Bride of Frankenstein would be the Old Maid but she isn't. But who is?