General view of a two-position vertical windup machine used during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware.
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“Two-Position Vertical Windup at DuPont Experimental Station,” March 8, 1938. Joseph X. Labovsky Collection of Nylon Photographs and Ephemera, Box 2. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/r781wg07h.
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