Superman 1939 #258 - 4.0 - $6.00

Golem smashing through door to Superman's Fortress

Clark searches for mysterious neighbor Mr. Xavier.

On-sale date from Comic Reader #88.

• Fury of the Energy Eater! - Cover art credits confirmed from Julius Schwartz's editorial records, provided by DC Comics.
• Who is Mr. X? - Job number and credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. Esposito assisted Giacoia on inks. Info per Nick Caputo, September 2023.