Phantom Zone appears in 9 issues in this volume.
Superboy's Big Brother
June 1, 1961
The Kid Who Kayoed Superboy ; The Untold Story of the Phantom Zone!
April 1, 1963
The Super-Dog That Replaced Krypto!
December 1, 1963
The Atomic Superboy!
September 1, 1964
Jor-El's Visit to Earth!
June 1, 1965
The Twilight World of No Return!
April 1, 1966
Superboy and His Super-Friends!
May 1, 1966
Superboy's Red Letter Days
June 1, 1970
DC 100 Page Super Spectacular DC-12
May 1, 1972
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