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Format Image Remove constraint Format: Image Rights No Known Copyright Remove constraint Rights: No Known Copyright Subject Insecticides Remove constraint Subject: Insecticides Subject Chemical industry Remove constraint Subject: Chemical industry Subject Corporations Remove constraint Subject: Corporations Subject Naval stores industry Remove constraint Subject: Naval stores industry Date 1940 to 1941 Remove constraint Date: <span class='from'>1940</span> to <span class='to'>1941</span>

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    • 1940

    Advertisement for various naval stores products, including Yarmor 302 Pine Oil and D.H.S. Activator, manufactured and sold by the Hercules Powder Company for use as raw materials in the formulation of insecticides and…

    • 1940

    Advertisement for D.H.S. Activator, a trademarked name for Ethylene glycol ether manufactured and sold by the Hercules Powder Company to increase the effectiveness and reduce the manufacturing costs of pyrethrum and…

    • 1940

    Advertisement for D.H.S. Activator, a trademarked name for Ethylene glycol ether manufactured and sold by the Hercules Powder Company to increase the effectiveness and reduce the manufacturing costs of pyrethrum and…

    • 1940

    Advertisement for D.H.S. Activator, a trademarked name for Ethylene glycol ether manufactured and sold by the Hercules Powder Company to increase the effectiveness and reduce the manufacturing costs of pyrethrum…

    • 1940

    Advertisement for D.H.S. Activator, a trademarked name for Ethylene glycol ether manufactured and sold by the Hercules Powder Company to increase the effectiveness of liquid insecticides and sprays. This advertisement…