[Members of the Abraham Lincoln Brigade, farewell ceremony for the International Brigades, Les Masies, Spain]

David L. Lawrence, Pittsburgh mayor, reading 'The Shame of the Cities' by Lincoln Steffans

[Major Milton Wolff, commander of the American Abraham Lincoln Brigade, near Falset, Spain]

[Republican soldiers firing machine guns, University City, Madrid]

[Republican soldiers of the International Brigade, University City, Madrid]

[Martin Luther King Jr. addressing Prayer Pilgrimage for Freedom, in front of the Lincoln Memorial, Washington, D.C.]

[Republican soldiers of the International Brigade, University City, Madrid]