In Husker Numbers: A Nebraska Number Book, readers can step back in history and experience nineteenth century frontier army life at Fort Atkinson, count the many ancient petroglyphs at Indian Cave State Park, or even 'regain' their marbles at Lee's Legendary Marbles museum in York. From the majestic natural landmark of Chimney Rock (a National Historic Site) to the 900,000 gallons of salt water in the Shark Tunnel at Henry Doorly Zoo, Nebraska has 'countless' treasures for all to enjoy.