Photomontage of the handshake of the necessary unit of both associations of labor unions represented by two forearm developed the muscle. Text in Catalan. On the reverse, the slogan is declined in three languages. Belongs to a series of 3 postcards on the same theme. Also exist with this text: Laborista Unueco por dispecigi fasismon!
Reproduction in black and white of a poster. The enemy (more exactly Hitler and his planes), bombards children. Card published by the German anarcho-syndicalist group of the Durruti's Column. Card reproducing as before a poster (colored).