A fine detailed large scale map by Christopher Greenwood (1786-1855). He was a surveyor and mapmaker from Yorkshire who settled in Wakefield by about 1815 before moving to London in 1818. His first large-scale survey was of Yorkshire published in 1817. The survey of Middlesex was Greenwood’s fourth large scale county production and the ONLY ONE published at the scale of TWO INCHES TO THE MILE. Greenwood was now in partnership with the publisher George Pringle. The early 1800s was a time of rapid change in the landscape with the burgeoning industrial revolution. Their surveys utilised the latest system of triangulation adopted by Colonel Mudge and his surveyors for the Ordnance Survey. Indeed, they were in open competition with them. The Greenwood maps were coloured as opposed to the more functional black and white Ordnance Surveys of the period. The map differentiates between woods and plantations, heaths and commons, different types of waterway, roads and of course canals. A large view of London from Buckingham House occupies the upper left of the map. Rodger (1972) 303; Worms & Baynton-Williams (2011).