Some of the names Schroeder calls out during the Valentine party are those of the people involved in the production, such as Joanne Lansing, the painting supervisor.
In the closing credits, Snoopy uses puppets. The puppets resemble the cast and crew members whose names are being shown on-screen.
Violet: Wow! A heart-shaped box of candy! Linus: I'm buying a valentine for Miss Othmar, my teacher. Violet: It's kind of expensive isn't it? Linus: The amount of money that you spend on a present should be in direct proportion to the amount of affection that you have for that person. Violet: You'd better be careful, Linus. It's not a good idea to fall in love with your teacher. Linus: I didn't say I was in love with her. I merely said I'm very fond of the ground on which she walks. Violet: Well, I have a problem, too. What do you give a man teacher for Valentine's Day? Linus: How about shaving lotion? Violet (to the store clerk): Do you have any heart-shaped shaving lotion?
Lucy: What are you doing, Charlie Brown? Charlie Brown: I'm waiting for valentines. Lucy: Oh, well. Good luck. Charlie Brown: Thank you. Lucy: You'll need it. Charlie Brown: You didn't have to say that!
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