1949 Single sheet (27 x 21 cm) with printed title.A hand-written and signed letter on the Muséum's stationery, dated "2 mai 1949". There is no addressee, but it was found accompanied with offprints of Max Desjardin's "Les Rissoina de l'Ile de Cuba" (16 p., 2 pls, printed wrappers), which was published in the October 1949 issue of the Journal de Conchyliologie. Desjardin was employed by the Muséum at that time, while at the same time Eduard Fischer-Piette (1899-1988) was coworker at the Muséum's invertebrates department and editor of the Journal de Conchyliologie. The letter folded in four, but otherwise in a very good state. One of the offprints of the Desjardin paper is added.