1956: Halloween Peanuts

In 1956, three Peanuts strips appeared that at least partially ended up in "It's the Great Pumpkin, Charlie Brown".

Here we have another reference to Charlie Brown's head being used as a model for a jack o'lantern.

The October 30, 1956, comic strip was used as the basis for Lucy's conversation with Sally Brown.  At this point, Linus was still trick-or-treating, and he gives a much different response from Sally's not wanting to be accused of taking part in a rumble.

 

 And for Halloween 1956, Linus was the one who cut holes in his ghost costume, not Charlie Brown.