Anonymous

Hercules Incorporated (American, 20th Century)

Charles Frederick Neagle (American, 1857-1944)

Hercules Incorporated (American, 20th Century)

Henriëtte Willebeek le Mair (Dutch, 1889 – 1966)

Anonymous

Hercules Incorporated (American, 20th Century)

Hercules Incorporated (American, 20th Century)

Hercules Incorporated (American, 20th Century)

Hercules Incorporated (American, 20th Century)

Hercules Incorporated (American, 20th Century)

Hercules Incorporated (American, 20th Century)

Coles Phillips (American, 1880 – 1927)

Dow Chemical Company (American, 19th/20th Century)

Anonymous