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       My gratitude goes to the actors and witnesses of that era who shared their memories and archives. Many thanks to: Maurizio Balestra, Geneviève Baud Spang, Antoine Baudin, Pierre Biner, Fernand Cuche, Maria Cywińska, Bohdan Cywiński, Hanna Czerejska, Ruth Dreifuss, Margrett Estermann, Josef Estermann, Anne Estreicher, Claudio Fedrigo, Marcel Gerber, Jerzy Grębski, Bohdan Górski, Françoise Grange Omokaro, Andreas Hoessli, Andrzej Ksyk, Clive Loertscher, Claudio Mésoniat, Marek Mogilewicz, Alberto Montorfani, Antonietta Moretti, Jean- Pierre Mottier, Zygmunt Marzys, Maria Nowak- Grębska, Flavio Schira, Ewa Starzyńska, François Rochaix, Krystyna Rottenberg, François Rosset, Mirek Swistak, Laurent Thevoz, Antonio Zanoni

For my research, which fuelled my reflection, I was welcomed with hospitality and generosity in many institutions. I would like to thank Jacek Sygnarski (Archivum Helveto-Polonicum Foundation), Swiss Federal Archives, UN Archives, Anna Bauman (Archiv des Polenmuseums Rapperswil), Patrick Auderset (Collège du Travail), Schweizerisches Sozialarchiv