Adventure Comics (1938-) #310

What's this? Krypto as the master and Superboy as the pet? What event led to this strange set of circumstances? Find out in "When Krypto was Superboy's Master!" Then in the Legion back-up, things turn deadly when a mysterious masked man begins killing the Legionaries one by one! Also contains pages reproduced in black and white.

Written By:
Henry Boltinoff, Jack Schiff, Edmond Hamilton, Georges Kashdan
Pencils:
George Papp, Sheldon Moldoff, Henry Boltinoff, John Forte
Inks:
George Papp, Sheldon Moldoff, Henry Boltinoff, John Forte
Cover By:
Curt Swan, Ira Schnapp, George Klein