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    • circa 1952

    General view of an unidentified employee measuring the specific gravity of a specimen in the Dow Chemical Company's Agricultural Chemical Research and Development Laboratory. Per an article in the August 1941 edition of…

    • 1952

    General view of an unidentified employee conducting low-temperature research in the Dow Chemical Company's Plastics Technical Services laboratory. In the chemical industry, a variety of machines and apparatus are…

    • 1950s

    General view of an unidentified employee using an Atlas Weather-O-Meter in the Dow Chemical Company's Coatings Technical Service department, which developed a range of materials used to improve the performance of paints…

    • 1974

    Bruce Billman using a Perkin-Elmer Atomic Absorption Spectrophotometer to test the metal content of a dye solution. This photograph was taken in the Analytical Section Laboratory at the Crompton & Knowles Research…

    • 1974

    View of a chemist in a two-person laboratory module for the synthesis and testing of dyes and chemicals at the Crompton & Knowles Research Center in Gibraltar, Pennsylvania.

    Based in Worcester, Massachusetts, Crompton…

    • 1974

    Exterior of the new Crompton & Knowles Corporation Research Center in Gibraltar, Pennsylvania. The Research Center housed laboratories for research and development in dyes and chemicals for the textile, paper, leather,…

    • 1966

    View of Laboratory No. 4 at the Crompton & Knowles Research Center in Gibraltar, Pennsylvania. The photograph shows a typical laboratory layout, including bench arrangement for easy access to the outward-opening door.…

    • 1966

    View of Laboratory No. 1 at the Crompton & Knowles Research Center in Gibraltar, Pennsylvania. The photograph shows a typical two-person laboratory set-up for a chemist and technician, including partitioned office space…

    • 1966

    View of chemist Dr. James F. Feeman filtering a dye slurry into a filter sink at the Crompton & Knowles Research Center in Gibraltar, Pennsylvania. The sink, made entirely of polyethylene, prevented the breakage of…

    • 1966

    Research Director George Garcelon inspects a portable temperature monitoring and control device at the Crompton & Knowles Research Center in Gibraltar, Pennsylvania. The device was used to regulate chemical reactions as…

    • 1966

    View of chemist James F. Feeman using a portable pH meter, designed by the Althouse Chemical Company, in a laboratory at the Crompton & Knowles Research Center in Gibraltar, Pennsylvania. A special stirring table for…

    • circa 1960

    Leo Labrecque using a Launder-O-Meter to test the wash-fastness of dyed fabric. Bottles containing a standard weight of fabric in a standard soap solution are visible both within and outside of the machine. During the…

    • circa 1960

    General view of the Customer Service and Quality Control Laboratory at the Althouse Chemical Company plant in Reading, Pennsylvania. The employees visible in the photograph are, from left: Tom Margolillo; Dot Bowen;…

    • circa 1960

    View of employee William White examining a Weather-O-Meter at the Althouse Chemical Company Customer Service and Quality Control Laboratory in Reading, Pennsylvania. To the left of the Weather-O-Meter are two…

    • circa 1960

    View of Warren Crowther removing a skein, a length of yarn wound in a loose coil, from the cylinder of a pressure-dyeing machine used for the application of colored dyes. This photograph was taken at the Althouse…

    • 1951

    View of Thomas Manzolillo examining a roller used to hold fabric in place for the application of dyestuffs. In this typical dye process, fabric is rolled through a trough of dye and then pressed between two heavy…

    • circa 1951

    View of James Feeman (left) and George Garcelon (right) operating assorted equipment for the application of dyestuffs. This photograph was taken at the Althouse Chemical Company Customer Service and Quality Control…

    • 1952

    View of dyeing technicians working in the Customer Service and Quality Control Laboratory at the Althouse Chemical Company plant in Reading, Pennsylvania. The technicians are engaged in a skein dyeing process whereby…

    • 1951

    General view of the Customer Service and Quality Control Laboratory at the Althouse Chemical Company plant in Reading, Pennsylvania. At left, plant manager Martin C. Eby is seen using a MacBeth light to evaluate color…

    • 1952

    General view of assorted machinery in the Customer Service and Quality Control Laboratory at the Althouse Chemical Company plant in Reading, Pennsylvania. At center, employees Robert Wither (left) and Carroll Dick…

    • 1952

    View of dyeing technicians working in the Customer Service and Quality Control Laboratory at the Althouse Chemical Company plant in Reading, Pennsylvania. The technicians are engaged in a skein dyeing process whereby…

    • 1951

    View of assorted machinery at the Althouse Chemical Company Semiworks or pilot plant in Reading, Pennsylvania. Identified machinery includes (from left to right) a filter press, blow case, portable centrifugal pump, and…

    • 1951

    View of chemist James Feeman using a Beckman Model DU (Ultraviolet/Visible) Spectrophotometer in the Research Laboratory at the Althouse Chemical Company plant in Reading, Pennsylvania. Other laboratory apparatus…

    • 1951

    View of George Garcelon using a portable Beckman pH Meter in the Research Laboratory at the Althouse Chemical Company plant in Reading, Pennsylvania.

    Based in Reading, Pennsylvania, the Althouse Chemical Company was…

    • 1951

    General view of the Research Laboratory at the Althouse Chemical Company plant in Reading, Pennsylvania showing various equipment and apparatus used for the production and testing of dyestuffs. At left, George Garcelon…