Goofs

Linus and Snoopy are entering the theater where the Spelling Bee is held from the interior of the building. When Linus tells the usher he's a friend of one of the contestants, they are shown going inside from the exterior.

Charlie Brown is seen setting off for the spelling bee with a suitcase and a duffel bag. Upon arrival, he only has the suitcase. Upon return, the duffel bag reappears, but when he gets home, it's only the suitcase again.

The scenery when Snoopy brings his record player out to the field play The Star Spangled Banner is different to when he takes it back.

Lucy gives Snoopy Charlie Brown's red kite and he flies it. Cut to a long shot, where the kite Snoopy is holding is yellow.

During "Champion Charlie Brown", Peppermint Patty is seen wearing a dress despite her character wearing shorts.

In the "I Before E Except after C" song, two displayed words are misspelled: FINANCEIR, which should be FINANCIER, and LEIZURE which should be LEISURE.

At one point in the cartoon, Charlie Brown and Linus Van Pelt are sitting on a step. Each are drawing in the dirt with a stick. At one point Linus wrote 6+5-2x9 = 99. The correct answer is negative 7. (Order of Operation)

When the kids get to New York and start getting into taxi's, Charlie Brown is seen getting into the back seat of one along with 3 other boys. You never see the taxi's rear door. (Though possibly it is due to the fact that the door would've been in the way of the view of the characters). When the last boy gets in and puts his duffle bag on his lap, you can clearly see its sticking out the side of the car. Plus, there should never be 4 people in a cars backseat, as there's not enough seat belts. Taxicabs in New York in the late 60s were often large enough to fit as many as 6 people in the rear area (at least the Checker-brand cabs were), and regardless of occupancy, it was not against the law to not wear a seat belt in a car back then. Seat belt laws did not start until the mid-1980s.

The Star Spangled Banner is shortened by a verse.

The National Spelling Bee is held in Washington DC, not New York.

Charlie Brown would not be competing in a national spelling bee so soon after winning the one at his school. He would first have to win the state spelling bee and then possibly a regional one.

Because they are minors, Charlie Brown and Linus would not travel to and around New York City without adult supervision in an actual setting.

When Linus suffers the withdrawal of being away from his blanket, he blames Charlie Brown. Linus willingly gave Charlie Brown his blanket, so he has no grounds for the accusation.