My Uncle Martin’s Big Heart by Angela Farris Watkins, illustrated by Eric Velasquez

From chapters.ca:
In this inspiring story about Martin Luther King Jr. told from the perspective of his young niece.  Readers will gain personal insight into one of the most influential figures of the twentieth century. As Angela Farris Watkins introduces children to her uncle, she presents them with a rare glimpse into his life at home, including special family moments. What unfolds is a story of character and service to God, family, and mankind, and of how one man's extraordinary love changed the history of the United States. Told with visually stunning art by Eric Velasquez, this is a perfect book for Black History Month and Martin Luther King Jr. Day, and throughout the year.