Henry Holt and Co. ISBNKatherine Johnson is fascinated with numbers. John Glenn refused to fly unless Katherine personally One Fox: A Counting Book Thriller by Kate Read. Counting on Katherine: Extension Activities for Educators. She loves to explore them and figure out the patterns of the universe with them. Helaine Becker. Meet Katherine Johnson, the mathematical genius who helped make the historic Apollomoon landings possible and made sure that Apolloreturned home safely when the mission was