Superman's Girlfriend Lois Lane (1958) #70 GD+
Published Nov 1966 by DC.
1st Silver Age appearance of Catwoman (see next issue for 2nd appearance & Detective Comics for #369 for 3rd appearance). Cover art by Kurt Schaffenberger. The Catwoman's Black Magic! [Part I], script by Leo Dorfman, art by Kurt Schaffenberger; When the Penguin escapes from prison, Lois tries to track him down but she is kidnapped by Catwoman instead, who hypnotizes her into acting as the villainess's double. House ad for Plastic Man #1. The Catwoman Gets the Bird! (Part II), script by Leo Dorfman, art by Kurt Schaffenberger; The Penguin confronts Lois, thinking she's Catwoman, but Superman, Batman, and Robin show up to take the Penguin back to prison. Superman's Cat-astrophe! (Part III); Catwoman takes Lois's place and tricks Superman into taking her to her lair, where she uses Circe's magic wand to turn him into a cat. Magic Photo Kit featuring Batman and Robin, pencils by Carmine Infantino, inks by Joe Giella. House ad for Justice League of America #48. GI Joe Club ad, art by Irv Novick. 36 pgs. $0.12. Cover price $0.12.