Kimberly Johnson and Jennifer Greb write: “As the 100th anniversary of the devastating 1921 Tulsa race massacre approached and Tulsa City–County Library looked for ways to educate the community about a significant piece of our city’s past, we had a disturbing realization: Many of our patrons, even those native to Tulsa, knew little to nothing about it. Decades of whitewashed reports and unacknowledged losses added up to a serious gap in how we understand our local and national history.”