When Luthor develops a liquid kryptonite gun, Superman replaces Batman with a new partner, Powerman.

1. Origin of the Superman Batman Team (Superman, Batman and Robin vs Luthor and his liquid Kryptonite gun / written by Edmond Hamilton) reprinted in World's Finest Comics #179
2. Doctor Rocket (by Henry Boltinoff)
3. The Frontier Census-Taker (Tomahawk / written by Dave Wood)
4. Look Back At Bowling (full text article)
5. The Taming of the Wild Bunch
6. The Rocket Raiders (Green Arrow / written by Ed Herron)
7. That Deep, Dark Secret (public service message by Buzzy / written by Jack Schiff)

Notes: Liquid Kryptonite used.