DC · July, 1969
1st Appearance of Dr. Krylo; Death of Dr. Krylo; Letter column includes Bob Brown biography; Price increase to 15 cents; Superboy discovers that Jor-El and Lara did not die when Krypton exploded, but died later while adrift in space
Superboy’s Darkest Secret!
Writer: Frank Robbins
Artist: Bob Brown