All-Star Comics #10

In the 1942 adventure "The Case of the Bomb Defense Formula! [Introduction]" from All-Star Comics #10, Hawkman, Dr. Mid-Nite, and Sandman team up with Professor Everson after thwarting a criminal gang, only to learn of a pressing need to safeguard America from aerial threats. When Everson casually reveals he’s perfected a time ray and tested it successfully, Johnny suggests a daring mission: journeying 500 years into the future to secure a vital bomb defense formula, with Flash and Green Lantern standing guard over the scientists back home.

In "The Case of the Bomb Defense Formula! Chapter 1," Hawkman awakens in the distant year 2442 to find himself mistaken for a Martian highwayman and locked away by a skeptical police force. With the help of his Nth metal, he escapes and races to the National Televisabrary, where an automated system reveals the scattered pieces of a vital formula—each hidden across time. Now, armed with the first fragment, Hawkman sets out to secure the rest, entrusting their locations to those who will pass through his era.

In this 1942 interlude from All-Star Comics #10, Hawkman leads the JSA on a time-jumping mission to 2442, where he hands each member a piece of the bomb defense formula and equips them with special flying belts—setting the stage for a high-stakes race across time and space.

In "The Case of the Bomb Defense Formula! Chapter 2," Sandman infiltrates a glass-domed city under the guise of a laborer, using his wirepoon to reach the hidden Chamber of the Manuscripts. When a fellow worker spots his device and raises the alarm, Sandman must evade a sudden swarm of flying workmen while securing the crucial formula.

In "The Case of the Bomb Defense Formula! Chapter 3," the Atom journeys across the Atlantic to a towering city nestled among snow-capped peaks, where he encounters a race of giants and is imprisoned in a birdcage. Using the language of birds—taught to him by Hawkman—he forms a bond with a mountain eagle, who helps him escape to a hidden cave where the formula is kept. With the formula secured, the Atom must now fight his way through danger to deliver his piece back to 1942.

In "The Case of the Bomb Defense Formula! Chapter 4," Starman finds himself trapped in a city of trees, his gravity rod stolen by a magnetic ray as he’s imprisoned in a glass sphere. After a daring escape that sends him hurtling through a valley and into a hidden manuscript room, he races to copy the vital formula before making his way back to 1942.

In "The Case of the Bomb Defense Formula! Chapter 5," Dr. Fate ventures beneath the waves to the submerged city of Oceania, where he’s welcomed by a pair who shelter the Man of Might. After reviewing newsreels that reveal the formula’s location, Fate suits up for the deep and sets out to retrieve his piece—only to find himself racing against those determined to keep it hidden.

In "The Case of the Bomb Defense Formula! Chapter 6," Dr. Mid-Nite and his faithful owl Hooty race to the City of Knowledge, where the Shrine of Science holds the key to completing the formula he’s been seeking. After proving his identity through a rare surgical skill, he earns the trust of the city’s scholars—only to discover that his quest has drawn dangerous rivals who won’t let him succeed.

In "The Case of the Bomb Defense Formula! Chapter 7," Corrigan lands on the floating island of Ultima, where he must reclaim a vital formula from a group of criminals. Disguised as a civilian, he seeks help from the planet’s High Savant—though the real Savant is watching from afar as the Spectre, in disguise, plays his part. With the stakes rising and danger closing in, Corrigan’s dual identity becomes his greatest weapon.

In "The Case of the Bomb Defense Formula! Chapter 8," Johnny crash-lands into a skybound city in the American Northwest, startling its residents—many of whom recognize him on sight. With the sudden news that his portion of a vital formula has been stolen by a mysterious Black Butch, he teams up with the Thunderbolt to track down the thief before the secret falls into the wrong hands.

In "The Case of the Bomb Defense Formula! Conclusion," the Justice Society of America returns to their secret lab just as they left, handing over the final pieces of a crucial formula to scientists who swiftly assemble the device. With the test a success, the team prepares to deliver both the Professor and the invention to Washington D.C.—but the mission is far from over.