Lillian Hoban

After they have a falling out, Arthur and his best friend Norman make up with very special valentines.

While hurrying to get on the school bus, Arthur and his friend unknowingly switch their lunchboxes. Later Arthur finds out what surprise his sister had put into hers.

Silly Tilly Mole is so forgetful and silly on Easter morning that she cannot find her bonnet and nearly fails to let the Easter Bunny into the house.

Although Arthur loses the Super Chimp Club contest, his pupil, sister Violet, wins the first grade reading competition and a prize for them both.

Forgetful Silly Tilly Mole nearly succeeds in ruining her Thanksgiving dinner, but her animal friends come to the rescue with tasty treats.

Arthur the chimpanzee is determined to be the best all-around gymnast at his gymnastics birthday party.

Raccoon twins Arabella and Albert track down the robbers who stole Mrs. Turtle's eggs.

Arthur finds a way to enjoy his Christmas cookies even after he discovers they can't be eaten.

Sol-1 helps all his friends with their work in the process of avoiding his own.