License Plate Guessing Game

Of course there were no personalized license plates back in 1956, but if there were… Who would be driving around with one of these on his or her car. Some are obvious: we all can all figure to whom the tag HCBEATTY would have belonged. Some—like WASH RAG—might have been chosen by any number of people; others—such as GLEE CLUB—would suit only one individual [Hint: Miss Christy]. You only get one guess.