There is a scene after the closing credits: Linus's model plane, whose runaway flying was a running gag throughout the film, finally sputters to a stop over the pond and falls straight in.
There is a scene in the closing credits: Snoopy, Fifi, Woodstock, the Beagle Scouts, and Snoopy's siblings celebrate Snoopy's victory over the Red Baron with root beer, then the Red Baron shows up and buzzes the party to splash the root beer into Snoopy's face.
Schroeder is at the bottom of the 20th Century Fox logo playing the fanfare on his piano.
During the credits, Lucy and Charlie Brown perform the football gag.