Horace Bénédict de Saussure. Etching with watercolour wash en grisaille after J. P. Saint-Ours Jean-Pierre Saint-Ours
Joseph Barclay Pentland. Lithograph by D. Castellini after C. E. Liverati, 1841 Carlo Ernesto Liverati
Marie-Paul-Emile Chauffard. Lithograph by J.B.A. Lafosse, 1868, after P.-L. Pierson Pierre-Louis Pierson
Salomon Schinz. Reproduction of line engraving by J. H. Lips after A. Speisegger Alexander Speissegger