Card Players in a Drawing Room by Pierre Louis Dumesnil the Younger https://www.rawpixel.com/image/9184790/image-bordeaux-vintage-illustration-public-domain-slaveFree Image from public domain licenseDrawing for the Street Elevation of a Town House by Andreas Schneidmann https://www.rawpixel.com/image/9328350/drawing-for-the-street-elevation-town-houseFree Image from public domain licensePierre Louis Moreau de Maupertuis. Line engraving after R. Tournières, 1737. https://www.rawpixel.com/image/13985515/pierre-louis-moreau-maupertuis-line-engraving-after-tournieres-1737Free Image from public domain licensePierre-Louis Moreau de Maupertuis pointing out the length of a degree on the longitude of meridian in Lapland to two people.… https://www.rawpixel.com/image/14015528/image-paper-cartoon-faceFree Image from public domain license