Boy Comics #19 (1950)

Boy Comics #19 is an anthology featuring two main stories. The primary story follows Crimebuster's greatest adventure, in which a young crime-fighter pursues villains through a train station and later confronts Nazi operatives, including a plot involving sabotage and prisoner execution during World War II. A secondary story involves a boy who discovers historical information about Anthony van Leeuwenhoek, the Dutch inventor of the microscope, and accidentally breaks a bookshelf while learning about the scientist's discovery of microscopic creatures living in human teeth.