Nel Yomtov is an award-winning author of children's nonfiction books and graphic novels. He specializes in writing about history, current events, biography, architecture, and military history. He has written numerous graphic novels for Capstone, including the recent School Strike for Climate, Journeying to New Worlds: A Max Axiom Super Scientist Adventure, and Cher Ami: Heroic Carrier Pigeon of World War I. In 2020 he self-published Baseball 100, an illustrated book featuring the 100 greatest players in baseball history. Nel lives in the New York City area. Silvio dB is a comic book artist from Brazil. He has illustrated numerous graphic novels for Capstone, including Cleansing the World: Flood Myths Around the World, Vikings: Scandinavia's Ferocious Sea Raiders, Ninjas: Japan's Stealthy Secret Agents, and Nat Turner's Rebellion.