[Republican militiaman in barricade with a rifle, Barcelona]

[Officers working around a massive gun, Minorca]

[Woman running for shelter at air raid alarm, Barcelona]

[General Enrique Lister and Ernest Hemingway, Mora de Ebro, Spain]

[General Enrique Lister and Ernest Hemingway, Mora de Ebro, Spain]

[Two sailors reading a letter on the Jaime I battleship, Almería, Spain]

[Men selling food to women at the market, Bilbao, Spain]

[Men selling food to women at the market, Bilbao, Spain]