Blackhawk #170

This March 1962 DC issue promises "another sensational two-part thriller" right on the cover, and it delivers a wild visual to match — Lady Blackhawk, transformed into a mermaid, streaks through the water toward a massive, spike-covered sea creature with snapping jaws, while blue-suited Blackhawk team members scramble below and a villain observes from a bubble-topped submarine above. The cover caption makes the stakes clear: she's going to try to rescue her teammates from Killer Shark's fantastic sea creature. Dick Dillin's pencils and Charles Cuidera's inks give the underwater chaos real energy, making this a genuinely fun snapshot of Silver Age DC adventure at its most imaginative.