Charles Schultz, axe-murderer ?

An article at the Peanuts wiki discusses the brief life and theoretically gruesome death of "Charlotte Braun," a minor and not-well-liked character in the series.

Charlotte's life in the strip was very short-lived. She made only 10 appearances, the last of which was on February 1, 1955; a victim of being an under-used supporting character with limited comic potential. Her bossy, loudmouthed traits survived, however, in the form of Lucy, who gained much storyline potential after her personality was changed in the mid-1950s (until that time Lucy had functioned as a wide-eyed child of wonder)...

...two months after Schulz died, a Peanuts fan named Elizabeth Swaim informed the Library of Congress that she would be donating a letter to the library, which was revealed that she had written to Schulz in 1955, requesting him to remove Charlotte Braun from the strip. Schulz replied that he would be willing to do so but said that the person who wrote to him would be responsible for "the death of an innocent child". Schulz concluded the letter with a picture of Charlotte Braun with an ax in her head. The letter is now in the United States Library of Congress.

Via Neatorama.