Sketches, F. Hayez, graphite pencil and ink – Opificio delle Pietre Dure, Firenze (for Accademia di Brera, Milano)
Technical drawings, graphite pencil and ink on large format paper – Same Deutz Fahr (BG)
Sketche for the painting: “Sul Fienile”, Pellizza da Volpedo, graphite pencil on large format paper– Opificio delle Pietre Dure, Firenze (for Associazione Pellizza da Volpedo)
Technical sketches, P. Abadie - Bibliothèque Nationale de France, Paris