A topographical map of Devonshire [Document cartographique] : including parts of the
adjacent counties / reduced from a survey made by order of the Board of Ordnance,
under the direction of Col. Mudge ; etched by J. Palmer ; 1813
Internet, VIAF : http://viaf.org/viaf/29878886/#Mudge,_William,_1762-1820, 2012-12-05