Le Lyon de nos pères, Vingtrinier et Drevet, 1901, page 335, dessin de Joannès Drevet, Lyon au XVe siècle, le trapon du pont de Saône

Book the lyon of our fathers, emmanuel vingtrinier and joannès drevet, 1901, page 335: the trap of the saonne bridge through which the criminals who are condemned to be drowned by justice are ejected at night. Municipal library of lyon.