



Louis Agassiz (American, 1807 – 1873)






William Henry Walker (American, 1871-1938)










John Cameron (American, 1828-1906)

Udo Keppler (American, 1872 – 1956)


Charles Hubbard Woodbury (American, 1870-1939)


Joseph Ferdinand Keppler (American, 1838 – 1894)



George Hand Wright (American, 1872-1951)
