A Map of Essex
Dissected on card, in dark green leather folder. Published by James Wyld, Charing Cross East. It's the Wallis/Ellis map of 1819, updated with railways and population figures for 1841 to 1871.
Scale correct at 8 miles = 27mm, or 7.5 miles/inch, ie 1:475,000.
Walthamstow branch just about shown (a "manual" addition?) that opened in 1870, but not Walthamstow to Bethnal Green or North Woolwich to Beckton (both opened 1872) - but the census population for 1871 is included.