Superman Superband #14

In "Grüner 'K' aus der Retorte!", Superman faces a desperate mission to prevent an intergalactic war—only to be blocked by the Legion of Super-Heroes, who reveal their thousand-year conflict has forged future weapons vital to Earth's survival. When Legionnaires kidnap Pete Ross' son, the boy confesses he’s known Clark’s secret all along and pleads for help, but Superman must refuse: Jon Ross is destined to lead the very fleet that will one day save the planet. Written by Paul Levitz and brought to life with dynamic art by Dick Dillin, inks by Dick Giordano, and vibrant colors by Jerry Serpe, this 1980 issue features cover art by Dillin and Giordano.