Retcon appears in 5 issues in this volume.
The Super-Mischief of Superbaby! ; The Secret Life of Krypto!
June 1, 1962
April 1, 1964
The War Between Superboy and Krypto!
January 1, 1965
The Seven Insect Lives of Lana Lang!
March 1, 1966
The Day It Rained Superboys!
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