online as the Medieval London, 1270 - 1300 layer of Layers of London at https://www.layersoflondon.org/map/overlays/medieval-london-1270-1300 The Archaeology of Greater London online map produced by MOLA (Museum of London Archaeology) and regularly updated at https://molarchaeology.maps.arcgis.com/apps/MapSeries/index.html?appid=9a85640effc042ae91af6b0d43abbafb (The Lorteburn is visible on the Prehistoric, Roman and Saxon views.) Notes Rivers of London