Title: Arthur loses his marbles
Description: Arthur's Grandma Thora, a marbles champion, trains him for the first-ever Elwood City Marbles Tournament, but does not tell him that she will compete against him.
Subjects: Marbles (Game), Animals, Aardvark, Grandmothers, Fiction, Games, Contests, Marbles (Game) -- Fiction, Games -- Fiction, Grandmothers -- Fiction, Contests -- Fiction, Aardvark -- Fiction, Animals -- Fiction, Arthur (fictitious character : brown), fiction, Aardvark, fiction, Children's fiction