Model voor het aanbrengen van registergaten (1736 - 1798) by Cornelis Ploos van Amstel https://www.rawpixel.com/image/13793257/image-background-paper-frameFree Image from public domain licenseProef van grafische techniek met verklarende tekst (1736 - 1798) by Cornelis Ploos van Amstel https://www.rawpixel.com/image/13771123/image-background-paper-bookFree Image from public domain licenseLezende vrouw (1736 - 1798) by Cornelis Ploos van Amstel, Jan de Bray and Christiaan Josi https://www.rawpixel.com/image/13776867/image-paper-cartoon-faceFree Image from public domain licenseJean Sylvain Bailly. Mezzotint by C.F.G. Levachez after J. Duplessi-Bertaux. https://www.rawpixel.com/image/13973902/jean-sylvain-bailly-mezzotint-cfg-levachez-after-duplessi-bertauxFree Image from public domain license