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

[Boy sitting on girl lying in makeshift bed in the subway, Madrid]

[Group of men and boys watching Nationalist air raid, Madrid]

[Republican soldier looking at "danger" graffiti, University City, Madrid]

[Francisco Ugarte and Joseph Kennedy Jr., American Embassy, Madrid]

[Francisco Ugarte and Joseph Kennedy Jr., American Embassy, Madrid]

[Soldier walking through Palace garden and fountain, Madrid, Spain]

[Republican soldiers camping in a physics laboratory, University City, Madrid]