"Treasure of the Seven Winds"
Rex, Danny, and a professor's daughter go diving. The girl, who discovers treasure in a cave, gets rescued from an Octopus by Rex.
"The Fabulous Dodo!"
Scientific notes about this extinct bird.
"Demon of the Speedways"
Raceway criminals take note of the proficiency that Bobo has at repairing his race car.
"A Cherokee Legend"
Material about Indian lore.
"Animal Names"
Material about the way animals species received their names.
"The Mystery of the Fantastic Footprints"
Rex the Wonder dog and Paul Henley try to track down the legend of the Abominable Snowman.