The overlays that highlight 17th century London features are approximate and derived from:
Open location in Google Maps: 51.508462, -0.032701
Duke's Shoar appears to be a dock on the Thames for Duke's Co. next to the right on the map in Limehouse
A map showing where Limehouse sits at the southward bend of the Thames in London
Chart showing the number of references in each month of the diary’s entries.