Schmöller, Natascha. “Swiss Humanitarian Aid in Spain and Southern France through Paul Senn’s Camera (1937-1942)”. Culture & History Digital Journal 8, no. 2 (December 30, 2019): e020. Accessed May 3, 2024. https://cultureandhistory.revistas.csic.es/index.php/cultureandhistory/article/view/169.