My selection is "Sit-in: how four friends stood up by sitting down" written by Andrea Davis Pinkney with illustrations by Brian Pinkney.
This picture book recounts the 1960 sit-in by four college students aimed at integrating a Woolworth's lunch counter in Greensboro North Carolina. Pinkney makes this historic moment both personal and accessible for young readers. The choice of language conveys the serious nature of the struggle and the excitement of the changing times. Quotes from Martin Luther King Jr. are woven into the narrative.
The book includes reading list, timeline, and websites for use in follow up discussions.