It's The Great Pumpkin, Charlie Brown, 1967

It's the Great Pumpkin, Charlie Brown, the animated Peanuts classic by Charles Schulz, premiered in October 1966. While Charlie Brown and the Peanuts gang go trick-or-treating, Linus and Sally wait for the arrival of the title character. When the Great Pumpkin doesn't appear, Sally becomes irate about missing "tricks-or-treats," but faithful Linus is undeterred, vowing to wait again next year.