"The Day the Earth Split in Two"
Story reprinted from Mystery in Space (1951) #31.
Adam Strange in "The Fadeaway Doom"
Story reprinted from Mystery in Space (1951) #68.
"The Dream Journey Through Space"
Story reprinted from Mystery in Space (1951) #58.
"The Hothouse World"
Story reprinted from Mystery in Space (1951) #13.
"The Last Television Broadcast on Earth"
Story reprinted from Mystery in Space (1951) #28.
"Detour in Time"
Story reprinted from Strange Adventures (1950) #89.
The Atomic Knights in "The Plant that Hated Humans"
Story reprinted from Strange Adventures (1950) #150.