The Complete Peanuts — Fantagraphics
Issue: #20
This 20th volume is particularly dense with romantic intrigue, as Marcie and Charlie Brown end up at camp together, sending Peppermint Patty into mad jealousy (especially since Marcie can't resist teasing her)... and an old friend of Charlie Brown's attempts to look him up again but confuses him with Snoopy and goes on a date with him instead.But the most crucial event in romance is Charlie Brown'...
First appearances: Peggy Jean
Creators: Charles M. Schulz, Lemony Snicket
Characters: Charlie Brown, Lucy van Pelt, Sally Brown, Marcie, Woodstock, Olaf, Spike, Peggy Jean, Snoopy, Pig-Pen, Franklin, Linus van Pelt, Peppermint Patty, Schroeder