Reproduction of the title page from Léger, Eugène: Les Alcaloïdes des Quinquinas Paris, 1896. The title page was possibly reproduced as part of the printed books lent by Professor P. Van der Wielen, Laboratorium voor Artsenijbereidkunde van de Universiteit van Amsterdam, and exhibited in Malaria section of the international celebration and exhibition : three hundredth anniversary of the first recognized use of cinchona by Europeans, 1630-1930 hosted by the Wellcome Historical Medical Museum in 1930. The book is listed as exhibit no. 545 in the souvenir catalogue.