Acknowledgements

The editor and curator of the KWY website would like to give thanks to the Fundação Arpad Szenes – Vieira da Silva. Firstly, to Marina Bairrão Ruivo, the director of this excellent institution, who allowed us to access, reproduce, and newly present some valuable documents held in the archives of this Foundation.

No less important was the collaboration of Sandra Santos, the coordinator of the Foundation’s Documentation and Research Centre, to whom we send a special greeting for having accepted, with her beautiful sphinx-like gaze, the challenge of writing a text about KWY, almost a secco.

We extend our gratitude to Dr. Elísio Summavielle, President of the Administrative Council of the Centro Cultural de Belém, for graciously allowing the reproduction of the KWY. Paris 1958-1968 catalogue.