Lovers Under a Single Umbrella. Original from the Minneapolis Institute of Art. https://www.rawpixel.com/image/7638518/image-art-vintage-public-domainFree Image from public domain licenseDistinguished British men of science 1807-1808 assembled in the library of the Royal Institution, London. Mezzotint by W.… https://www.rawpixel.com/image/13975701/image-person-art-clothingFree Image from public domain licenseDistinguished British men of science 1807-1808 assembled in the library of the Royal Institution, London. Mezzotint by W.… https://www.rawpixel.com/image/13981199/image-person-art-clothingFree Image from public domain licenseHerbouwde huizen aan de Visbrug te Leiden, na de brand van 1766 (1767) by Noach van der Meer II, Noach van der Meer II and… https://www.rawpixel.com/image/13776905/image-dog-paper-personFree Image from public domain licensePortret van een onbekende man (1766 - 1767) by Johannes Körnlein, Cornelis Ploos van Amstel, Anthony van Dyck and Cornelis… https://www.rawpixel.com/image/13778170/image-paper-cartoon-faceFree Image from public domain licenseThe distinguished men of science 1807-8: a key to the identities of the sitters. Photograph of engraving by W. Walker, 1862… https://www.rawpixel.com/image/14011458/image-cartoon-face-personFree Image from public domain licenseItalian scientists: Galileo in the centre, others in orbit around him. Lithograph by V. Mollame, 1842. https://www.rawpixel.com/image/14016062/image-face-frame-personFree Image from public domain license