Oh Boy! Comics #21

Boy Comics #21 is an anthology issue featuring multiple stories. "The Barrel" depicts a boxing match at the Midtown Arena where two fighters compete in the ring while spectators watch outside. Another story follows a taxi driver who encounters Joe Travers, the Barrel's manager, leading to a scheme involving Grand Central Station and the railroad. A separate story features a young boy who answers an advertisement and meets an elderly inventor resembling Leonardo da Vinci, who claims to have created a machine capable of transporting the boy to the 40th century, though the boy expresses hesitation about being sent into the future.