''I have naturally curly hair.'' With those fateful words, The Complete Peanuts introduces another main character to the gang, the vain Frieda (not to mention her cat Faron). Also in this volume, which collects two full years from the early 1960s - one of Schulz''s most fertile periods - Sally begins to grow up, Snoopy endures an avian family crisis, Linus develops a crush on Miss Othmar and loses his blanket again (when Lucy turns it into a kite and then lets it fly away), and more baseball routs. Aaaugh!!