The Obsidian Collection is evolving its consumer- facing digital photo portal, Obsidian Images, to offer NFTs of rare photographs of Dr. Martin Luther King Jr. during his historic visit to Chicago in 1966. Captured by the legendary John Tweedle, the first African American photographer hired by a major metropolitan newspaper, the NFTs chronicle King challenging Chicago’s slumlords, institutional racism, and Mayor Richard J. Daley himself, as well as King speaking to a crowd at Soldier Field and a fundraiser for the movement at Chicago’s iconic International Amphitheatre that drew locals and celebrities alike, including Sidney Poitier, Harry Belafonte and Mahalia Jackson.