https://geolmaps.com/products/lobley-j-l-1892-contoured-map-of-the-thames-watershed-with-the-north-east-part-of-the-county-of-kent-royal-commission-on-metropolitan-water-supply-b-w-lithograph 2026-09-26T17:36:24+01:00 daily https://cdn.shopify.com/s/files/1/2210/7301/files/ThamesBasincontours_2.jpg?v=1790437026 Lobley, J.L. (1892). ‘Contoured Map of the Thames Watershed, with the North East Part of the County of Kent. Royal Commission on Metropolitan Water Supply. b/w lithograph