Elizabeth's presentation was devoted to the people with Afro-American roots who contributed greatly to the development of the USA in particular and the world in general. Elizabeth MacDonald told about the leader of underground railroad, explorers, educators, physicians, leaders of civil rights movement, sportsmen, writers and diplomats. The visitors learnt about Harriet Tubman, G.W.Carver, Mathew Henson, Mary Bethune, Martin Luther King and other famous people.