Presidents since 1853

President since 2017

Biography

Wikipedia biography

President from 2000 to 2016

Biography on Wikipedia

President from 1992 to 2000

Biography on Wikipedia

President from 1978 to 1992

Wikipedia biography

Director, then President from 1963 to 1978

Biography on Wikipedia

Director from 1940 to 1963

Wikipedia biography

Director from 1919 to 1940

Director from 1911 to 1918

Director from 1907 to 1911

Director from 1904 to 1907

Director from 1898 to 1904

Biography on Wikipedia

Director from 1894 to 1898

Director from 1887 to 1894

Director from 1874 to 1875

Wikipedia biography

Director from 1871 to 1873 and in 1874

Founding member

Founding member

Director several times between 1853 and 1871, then between 1875 and 1887

Biography on Wikipedia

Founding member
Director from 1854 to 1855

Founding member

Director several times between 1853 and 1874

Founding member