New cultural-history book traces 150 years of trading-card innovation, collecting, community and the modern hobby (ROSEMONT, Ill) — July 29, 2026 — Alladan Flinn, founder of Based Trading Cards, and Nick Jarman, Founder and CEO of the Certified Trading Card Association (CTCA), have announced their forthcoming book, Cardboard Kings: The History of Trading Cards, a comprehensive look at the history, culture and evolution of trading cards. Scheduled for release during the 2026 h