On the temperature in diseases : a manual of medical thermometry / by Dr. C. A. Wunderlich ; translated from the second… https://www.rawpixel.com/image/14021867/image-background-paper-technologyFree Image from public domain licenseFabriekshal met machines en apparatuur, Duitsland (c. 1910 - c. 1921) by A Gross and A Gross https://www.rawpixel.com/image/13752328/photo-image-paper-person-technologyFree Image from public domain licenseBlue grid background https://www.rawpixel.com/image/11214044/blue-grid-backgroundView licenseBlue grid background https://www.rawpixel.com/image/11218362/blue-grid-backgroundView licenseOn the factory floor of the Vought-Sikorsky Aircraft Corporation, Stratford, Connecticut. Sourced from the Library of… https://www.rawpixel.com/image/12262438/photo-image-person-airplane-technologyFree Image from public domain licenseIn the Vought-Sikorsky Aircraft Corporation, Stratford, Connecticut. Sourced from the Library of Congress. https://www.rawpixel.com/image/12262398/photo-image-person-technology-public-domainFree Image from public domain licenseIn the Vought-Sikorsky Aircraft Corporation, Stratford, Connecticut. Sourced from the Library of Congress. https://www.rawpixel.com/image/12262392/photo-image-person-technology-public-domainFree Image from public domain license[Untitled photo, possibly related to: At the Mary-Leila cotton mill in Greensboro, Georgia]. Sourced from the Library of… https://www.rawpixel.com/image/12320854/image-person-technology-public-domainFree Image from public domain licenseIn the Vought-Sikorsky Aircraft Corporation, Stratford, Connecticut. Sourced from the Library of Congress. https://www.rawpixel.com/image/12317048/image-person-airplane-technologyFree Image from public domain licenseWomen in industry. Tool production. 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