Superman 131 (Aug 1959) FI- (5.5)

Writing in Blue Pen on front cover below logo.

Writing on bottom of second page in pencil  

The Menace of Mr. Mxyzptlk!

Script: Jerry Coleman

Pencils: Al Plastino

Inks: Al Plastino

Characters: Lois Lane; Superman [Clark Kent / Kal-El]; Mr. Mxyzptlk

Synopsis: Mr. Mxyzptlk returns and this time he has an alarm in his hat to warn him when he is about to say his name backwards.