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    • 1883

    Intended to promote sales, Harrison Brothers and Company's advertising note features a vignette illustration of the Grays Ferry Chemical Works, another name for the manufacturer. Ad claims "One gallon will cover from…

    • 1972-Jan – 1972-Dec

    "The Hercules Mixer" was Hercules' in-house publication that provided both historical and technical information and also offered a glimpse of employees' day-to-day lives at the company. Portions of the Number 1 and 3…

    • 1967-Jan – 1967-Dec

    "The Hercules Mixer" was Hercules' in-house publication that provided both historical and technical information and also offered a glimpse of employees' day-to-day lives at the company. Portions of the January-February…

    • 1966-Mar – 1966-Dec

    "The Hercules Mixer" was Hercules' in-house publication that provided both historical and technical information and also offered a glimpse of employees' day-to-day lives at the company. Portions of the March-June 1966…

    • 1945-Jan – 1945-Dec

    "The Hercules Mixer" was Hercules' in-house publication that provided both historical and technical information and also offered a glimpse of employees' day-to-day lives at the company. Portions of the June and October…

    • 1944-Jan – 1944-Dec

    "The Hercules Mixer" was Hercules' in-house publication that provided both historical and technical information and also offered a glimpse of employees' day-to-day lives at the company. Portions of the April-June 1944…

    • 1942-Jan – 1942-Dec

    "The Hercules Mixer" was Hercules' in-house publication that provided both historical and technical information and also offered a glimpse of employees' day-to-day lives at the company. Portions of the February and…

    • 1941-Jan – 1941-Dec

    "The Hercules Mixer" was Hercules' in-house publication that provided both historical and technical information and also offered a glimpse of employees' day-to-day lives at the company. Portions of the February and…

    • 1952-Apr-29

    U.S. Patent 2,594,740, filed on behalf of Lee de Forest and William A. Rhodes, describes a device for amplifying the intensity of radiation.

    Lee de Forest (1873–1961) was an inventor, most notably of Audion vacuum…

    • 1964-Jan – 1964-Dec

    "The Hercules Mixer" was Hercules' in-house publication that provided both historical and technical information and also offered a glimpse of employees' day-to-day lives at the company. A portion of the May 1964 section…

    • 1963-Jan – 1963-Dec

    "The Hercules Mixer" was Hercules' in-house publication that provided both historical and technical information and also offered a glimpse of employees' day-to-day lives at the company. Portions of the May and October…

    • 1962-Jan – 1962-Dec

    "The Hercules Mixer" was Hercules' in-house publication that provided both historical and technical information and also offered a glimpse of employees' day-to-day lives at the company. Portions of the…

    • 1961-Jan – 1961-Dec

    "The Hercules Mixer" was Hercules' in-house publication that provided both historical and technical information and also offered a glimpse of employees' day-to-day lives at the company. A portion of the June 1961…

    • 1949-May

    This paper describes the use of an older style of glass prism in a new spectrophotometer made by Beckman Instruments. This new spectrophotometer would become the Model B, the glass prism making it a cheaper alternative…

    • 1960

    The 1960 annual report covers a year of notable milestones. It was the 25th anniversary of the company. The report devoted several pages to highlighting new instruments, including a number of pH meters and the DB…

    • 1956

    The 1956 annual report covers a year of significant expansion. In November 1955, the company's stock was listed on the New York Stock Exchange. The number of employees grew by nearly fifty percent, to 3,020, and William…

    • 1956

    Stamp depicts aspects of chemistry and related sciences. The design depicting a laboratory vessel is illustrative of the scientific equipment used widely for research in the chemical industry. A representative chemical…

    • Pasteur Institute - Library
    • circa 1920

    Postcard depicts three men working in the library of the Pasteur Institute.