John Ross Key (American, 1754 – 1821)
William Morris Hunt (American, 1824-1879)
Charles Atwood Kofoid (American, 1865-1947)
Dugald Stewart Walker (American, 1883 – 1937)
Samuel Johnson Woolf (American, 1880-1948)
Louis Agassiz (American, 1807 – 1873)