
Anonymous

Willem Pothast (Dutch, 1877-1916)

Anonymous

Anonymous

Charles Buckles Falls (American, 1874-1974)

Anonymous

Eddy de Smet (Dutch, 20th Century)

Anonymous

Eric Rohman (Swedish, 1891 - 1949)

A.W.B. Lincoln (American, 19th/20th Century)

Alfred Offner (Austrian, 1879–1937)

Edwin Howland Blashfield (American, 1848 - 1936)

Laboratoire du calcium français (French, 20th Century)

Rudolf Dürrwang (Swiss, 1883–1936)

Jean d'Ylen (French, 1886-1938)

Julius Klinger (Austrian, 1876 – 1942)

Anonymous

Michael P. Whelan (American, 19th/20th Century)

Anonymous

Laboratoires Uromil (French, 20th Century)