Adventure Comics # 210 Facsimile Edition 2025 NM

Adventure Comics # 210 1955 is historically significant for featuring the first appearance of Krypto the Superdog, the pet dog of Superman from Krypton. The issue also contains separate stories for Aquaman and Green Arrow. 

• Superboy: "The Super-Dog from Krypton!": A super-powered white dog arrives in Smallville in a Kryptonian rocket ship. Superboy investigates and discovers the dog is Krypto, his own pet puppy from babyhood on Krypton, who Jor-El had sent into space in an experimental rocket that was knocked off-course by a meteor. Superboy and Krypto joyfully reunite and romp together, but Krypto's immense powers and playful nature constantly risk exposing Superboy's secret identity. Eventually, Krypto flies off to explore space on his own, leaving Superboy both relieved of the trouble and sad to see his pet leave again.
• Aquaman: "The First Undersea Newspaper": A sea captain and his daughter, who run a newspaper with news about the sea, have their printing press destroyed by criminals attempting to prevent the publication of a story that would expose their smuggling operation. Aquaman steps in and uses his aquatic abilities and friends to help them publish the newspaper.
• Green Arrow: "The Defeat of Green Arrow": Green Arrow and Speedy pursue criminals who have just committed a bank robbery, only to find their trick arrows malfunctioning. They discover that a criminal mastermind known as Mr. Genius has obtained the technical plans for their arsenal and modified the equipment to work against them.