Danger in the Air!

Never had the Flash met up with a villain as cunning as The Trickster! Dressed in a harlequin clown costume--mocking the world--the Incredible Trickster showed Flash a clear pair of heels time and again--until that fateful moment at the circus when the World's Fastest Human unveiled a spectacular new trick of his own! "Danger in the air!"

Trivia: this is the first appearance of the the Trickster

The Man who Claimed the Earth

It seemed incredible that a solitary spaceman could boldly land on Earth--decree the planet to be a colony of his native world--and have the tremendous powers to enforce his authority! Not even the speedy tactics of Earth's champion--The Flash--seemed good enough to overpower..."The Man who Claimed the Earth!"