Wonder Dog doesn't have the letter as he runs on the street and is shown aboard the back of the truck, though he has it in his right forepaw when he arrives at the Hall.
Superman is concerned about killer whales attacking him and Aquaman, while they are clearly sharks.
When Wendy visits Luthor Fenwick at his company Towers you can see the smoke and the smoke stacks are off line for a minute.
Ferris wheel was misspelled as "ferris whell".
The second time the Super Friends meet with J. Mortimer Hutchinson and the zephyr strikes you hear Batman's voice coming out of Superman.
Superman is shown talking underwater, when logically he should not be able to, as having the ability to do all things naturally submerged in water that he can out of it is not one of his powers.
Superman's super freeze breath would be able to easily stop all three tidal waves, yet he never avails himself of this power. Instead, he gathers and piles up junk to stop the first one, he and Aquaman use the fronts of bulldozers to stop the second, then the two along with Robin use refrigerant coils to stop the last one.