City View in the Winter (1790 - 1813) by Dirk Jan van der Laan https://www.rawpixel.com/image/13734248/city-view-the-winter-1790-1813-dirk-jan-van-der-laanFree Image from public domain licenseDesign for Lobby Ceiling after Piranesi, Chamber Story, Castlecoole, County Fermanagh, Ireland https://www.rawpixel.com/image/9099793/image-art-watercolor-vintageFree Image from public domain licenseDrop-front secretary on stand (secrètaire à abattant or secrétaire en cabinet) (one of a pair) (part of a set) https://www.rawpixel.com/image/12850815/photo-image-art-leaves-goldFree Image from public domain licenseJohn Locke, Benjamin Franklin, Joseph-Louis Lagrange, and Galileo Galilei: profile portraits taken from medals. Line… https://www.rawpixel.com/image/13997025/image-cartoon-face-personFree Image from public domain licenseJ.-L. Lagrange, Saluces and G. F. Cigna. Line engraving by Petit. https://www.rawpixel.com/image/14007849/j-l-lagrange-saluces-and-cigna-line-engraving-petitFree Image from public domain license