1874
Jean Louis Rodolphe Agassiz, 1874
Jean Louis Rodolphe Agassiz, 1875
Jean Louis Rodolphe Agassiz, 1869
Jean Louis Rodolphe Agassiz, 1855
Jean Louis Rodolphe Agassiz, 1854
Jean Louis Rodolphe Agassiz, 1866
Preston Powers, 1878
Preston Powers, 1875
