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Exhibition Science at Play Remove constraint Exhibition: Science at Play Rights Public Domain Mark 1.0 Remove constraint Rights: Public Domain Mark 1.0 Date 1945 to 1949 Remove constraint Date: <span class='from'>1945</span> to <span class='to'>1949</span>

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    • 1947

    Cardboard box with color printing shows boys and girls engaged in household chemistry: cleaning and polishing metals, "chemistry magic," stain removal and laundry tasks. Inside, blue-labeled vials of chemical samples…