Superman Vs. Brainiac in the Fifties and Sixties   

SUPERMAN NO.173 NOVEMBER 1964. COVER by Curt Swan & George Klein.
"The Untouchable Clark Kent" by Curt Swan & George Klein.
"Tales of the Green Kryptonite No.1" by Al Plastino.
"The Triumpf of Luthor and Brainiac" by John Forte.