This page arranges digitized image collections by the century in which the original works were created. There will be overlap with the other thematic pages in this guide.
British Library. Grimm, Samuel Hieronymous. 3,000 Topographical drawings dated to late 18th century of sites in the UK have been digitized at the British Library. See url: http://www.bl.uk/onlinegallery/onlineex/topdrawings/index.html This is a wonderful resource for historical studies, showing sites pre-19th prints and later wars.