Martin Luther King Jr. addresses a crowd from the steps of the Lincoln Memorial where he delivered his famous, “I Have a Dream,” speech during the Aug. 28, 1963.
Robert Wadlow (b. 1918) is the tallest person in documented history. Due to an overactive pituitary gland, he was taller than his father at age 8 and continued to grow reaching 8 feet 11 inches at age 22. Pictured here with his family at age 21.