October 27, 1966 –
The third Charles Schultz Peanuts special, It’s the Great Pumpkin, Charlie Brown, (directed again by Bill Melendez,) premiered on this date. https://archive.org/embed/its-the-great-pumpkin-charlie-brown_202310
This is the only special where Pig Pen is shown wearing glasses. You can see them when he is with the other kids at the Halloween party around the apple tub just before Lucy bobs for an apple.
The Haus of Dcaligari 