A superb large scale map of the county laid out in the scale of one inch to the mile. The eastern sheet bears a very large view of Exeter Cathedral. The western sheet contains an inset detailing Lundy Island and also bears the Explanation lower left. The map differentiates between woods, parks and pleasure grounds, heaths and commons, different types of waterway and road. Both watermills and windmills are identified indicating their significance to the local economy. A recent feature on the landscape was railways and the Plymouth to Dartmoor Railway built in 1823 is shown. The non passenger Heytor granite railway is also shown. Although Rodger does not record any other editions this is the third state according to Batten and Bennett. Provenance: with the Parker family crest, Welford House, Somerset, pasted to the inside of the slipcase.

Christopher Greenwood (1786-1855) was a surveyor from Wakefield, Yorkshire and moved to London in 1818. His brother John was also a surveyor and in 1821 they joined forces and with the distribution capabilities of George Pringle and Son, made an immediate impact with their series of large scale surveys of many English counties. 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 Survey’s of the period. Batten and Bennett 96 st. 3; Rodger (1972) 90.