
William Allen Rogers (American, 1854-1931)

U.S. Public Health Service (American, 1798-)

Adolfo Hohenstein (German, 1854–1928)

Leo Gestel (Dutch, 1881- 1941)

Leo Gestel (Dutch, 1881- 1941)

Leo Gestel (Dutch, 1881- 1941)

Antoon Derkinderen (Dutch, 1859 - 1925)

Richard Nicolaüs Roland Holst (Dutch, 1868 - 1938)

Marius Bauer (Dutch, 1867 – 1932)

Marius Bauer (Dutch, 1867 – 1932)

Reinier Willem Petrus de Vries (Dutch, 1874 - 1952)

Julie de Graag (Dutch, 1877–1924)

Reijer Stolk (Dutch, 1896 - 1945)