JUSTICE LEAGUE OF AMERICA #21-GOOD+/VG 1ST SA APPEARANCE HOURMAN!
1st Silver Age appearances of Hourman and Dr. Fate. Cover pencils by Mike Sekowsky, inks by Murphy Anderson. Crisis on Earth-One!, script by Gardner Fox, pencils by Mike Sekowsky, inks by Bernard Sachs; 3 villains each from Earth-1 and Earth-2 hatch a plot to commit crimes, then hide out on the other Earth.