Biblioteca Regional de Madrid
Ubicación: Gráfico — Signatura: Mg.XXVIII/1353 — Notas: Sellos en tinta azul con los datos de la agencia y condiciones de reproducción y en tinta negra con la fecha: "29 JUL 1936" Nota mecanografiada adherida al verso: "Pictures by air of Spanish Civil War / Gun battery in action against rebels north of Madrid / Associated press photo shows: Field guns in staggered formation interspersed with volunteer snipers at Somosierra in the defence of Madrid against advancing fascist insurgensts. The battery staff can be seen in centre of picture directing the fire of the guns. / Buy 143914 28736 F" y nota en color azul al verso: "L-P270" Ejemplar para conservación