Action Comics 1938 #434 - reader copy - $5.00

The Kryptonians Dr. Xadu and Zeda trick Clark Kent into a dentist chair where they reveal that they have returned to Earth and have placed Superman under their control.

Zatanna accidentally gives herself the powers and personality of Black Canary, causing Green Arrow problems when the real Black Canary becomes jealous.

On-sale date from Comic Reader #103.

• The Krypton Connection! - Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. Color credits provided by Anthony Tollin.
• The Krypton Connection! - Dr. Xadu and Erndine (now called Zeda) had been trapped on the planet Exon by Superboy in Superboy #100. They have escaped by some unrevealed method. This story ignores Dr. Xadu's multiple appearances in the Phantom Zone since Superboy #100. Story continues next issue.
• Zatanna's Double Identity! - Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. Printed credits read that story was written by Elliot Maggin "with a little help from Allen, Sal, Neal & Joanne."
• - Total copies printed: Average for previous 12 months: 532,922, Actual copies issue nearest filing date: 460,000.
• - Includes letters from Scott Paton, Perry Streetman, James T. McCoy and Will Nash.