It just occurred to me as I get near the end of the Peanuts History, that I forgot a rather important character. Pig-Pen! How could I forget? He's one of the main characters who's in almost every special, and in a lot of strips. Here he is in his first appearance on July 13, 1954.
The gang pretty much accepted him right way, his dirtiness aside. Well, except for Snoopy.
One time, he tried to impress Patty by "cleaning up".
But, for the most part, dirt was his life. In fact, some of the gang joined in.
Finally, Patty herself got into the act. A little too late.