The National Book Award is one of the most prestigious literary awards in the United States. The award was established in 1950 and is given annually to honor outstanding works of literature across various genres. In the realm of Black history, the National Book Award has recognized many important and influential works that have contributed to our understanding of African American history and culture.

Some notable winners of the National Book Award in Black history include:

- "The Warmth of Other Suns: The Epic Story of America's Great Migration" by Isabel Wilkerson, which won the National Book Award for Nonfiction in 2010. This book chronicles the mass migration of African Americans from the southern United States to the North and West in search of better opportunities during the 20th century.

- "Stamped from the Beginning: The Definitive History of Racist Ideas in America" by Ibram X. Kendi, which won the National Book Award for Nonfiction in 2016. Kendi's book provides a comprehensive history of racist ideas in America and how they have shaped the country's policies and institutions.

- "Brown Girl Dreaming" by Jacqueline Woodson, which won the National Book Award for Young People's Literature in 2014. This memoir in verse tells the story of Woodson's childhood and coming of age as an African American girl growing up in the 1960s and 1970s.

These are just a few examples of the important works in Black history that have been recognized by the National Book Award. The award helps to elevate the voices of Black authors and highlight their contributions to American literature and our understanding of the past.