[Member of the International Brigades defending a building in the University City, Madrid]

[Men of the International Brigades in a laboratory of the Medical School building of the University City, Madrid]

[Men of the International Brigades looking out the windows in a laboratory of the Medical School building of the University City, Madrid]

[Member of the International Brigades engaged in house-to-house fighting around the slaughterhouses near the University City, Madrid]

[Member of the International Brigades engaged in house-to-house fighting around the slaughterhouses near the University City, Madrid]

[Member of the International Brigades helping a wounded comrade in the vicinity of the slaughterhouses near the University City, Madrid]

[Republican bunkers around the Clinical Hospital, one of the principal bastions of the Nationalist rebels in the University City, Madrid]

[Republican bunkers around the Clinical Hospital, one of the principal bastions of the Nationalist rebels in the University City, Madrid]