Superman #258 (1972)

“Fury of the Energy-Eater!” Written by Len Wein, pencils by Curt Swan, inks by Murphy Anderson.  Superman battles the Galactic Golem.

“Who is Mr. X?” (Private Life of Clark Kent) Written by Cary Bates, pencils by Curt Swan, inks by Dick Giordano. Clark searches for mysterious neighbor Mr. Xavier.

Cover art by Nick Cardy.  Good condition.