Teen Titans #19

Teen Titans #19 (On Sale: November 26, 1968) has a nice cover by Nick Cardy.

"Stepping Stones for a Giant Killer" is by Mike Friedrich, Gil Kane and Wally Wood. This is Mike Friedrich's only Teen Titans story. His plans to defeat the Justice League mocked by Headmaster Mind, an old JLA foe, Punch, a teenage would-be-super-villain, vows to prove himself by destroying the Teen Titans first. Speedy rejoins the Titans, and he and Wonder Girl are captured by Punch when they investigate racial riots at a New England high school. At the same time, Robin, Kid Flash, and Aqualad are defeated by high-frequency sound and light devices while on a mission to a midwestern community.

Reunited as Punch's prisoners, the Titans use teamwork to escape his traps and overcome the youthful villain and his followers. Afterward, Aqualad returns to Atlantis for an extended leave, ostensibly in order to look after the infant Aquababy while Aquaman is involved in a quest for his missing wife, Mera. this kind of cross referencing of plots was unusual for DC at the time but something editor Dick Giordano would do often. Speedy becomes Aqualad's replacement among the Titans. Reprinted in Super-Team Family #1 and Showcase Presents: Teen Titans Vol. 2 TPB.

Edited by Dick Giordano.