Call to Arms: Communist Ephemerao of Madrid During the Spanish Civil War

Title: Socialistas! Comunistas!
Title translation:
Author/Publisher Group: Partido Comunista de España (Sector Este) / Célula 18-19
Place of Publication: Madrid
Publication Date: c. 1936-1939
Label/Document Translation:

"For the sake of the unified party of the proletariat! The unified party of the proletariat will obtain victory against fascism! Whoever opposes this union is a traitor!"