Adelaide Hasse was used to professional challenges. As a young woman, she struggled to be taken seriously by mostly male executive boards. She created a groundbreaking new way to classify government documents—and was disappointed when a male colleague claimed the credit. But armed with a new job at the New York Public Library, a better salary, and an ambitious new project, she finally felt optimistic about her career. To pull off her newest plan, she’d need support, so she approached the leading voice in her field, Melvil Dewey, a man whose innovations made him a household name. He suggested they...