Daniel-Henry Kahnweiler tells Pablo Picasso that the attendance at the opening of the Hamburg exhibition was so great that an extra microphone was required in another room in order for everyone to hear the opening speech.

Reference in the source Archive:

© Galerie Leiris
Photo © RMN - Grans Palais (Musée Picasso de Paris) / image RMN-GP

Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 14 March 1956