Links to Patrick O'Reilly's London Stone project pages:
Part 1: https://www.arcgis.com/apps/MapJournal/index.html?appid=af767b33e5b840778de12e8773ed4528
Part 2: https://www.arcgis.com/apps/MapJournal/index.html?appid=f38c043b42c14cef8550ad05b4e891e4
Part 3: https://www.arcgis.com/apps/MapJournal/index.html?appid=302cba8f0bdf48cda3d93ba8c9364046
Part 1: https://www.arcgis.com/apps/MapJournal/index.html?appid=af767b33e5b840778de12e8773ed4528
Part 2: https://www.arcgis.com/apps/MapJournal/index.html?appid=f38c043b42c14cef8550ad05b4e891e4
Part 3: https://www.arcgis.com/apps/MapJournal/index.html?appid=302cba8f0bdf48cda3d93ba8c9364046