Art, Murphy Anderson. Script, John Broome. Originally in "Strange Adventures" #153, 1963. Scanned from #229, 1971.
From "D.C. Special" #1, 1968. Art, Carmine Infantino and Joe Giella, 1964
Source: "The Flash" #177
Source: "From Beyond the Unknown" #6
Source: "Worlds Finest" #223
From "Military Comics" #3, 1941.
From General Electric's "Adventures in Science: The Story of Light," 1954.