Map of the County of York, Made on the Basis of Triangles in the County, determined by Lieut. Coll. W.m Mudge, Royal Art.y F.R.S. and Capt.n Thos. Colby, Royal Eng.rs, in the Trigonometrical Survey of England, by order of the Honourable Board of Ordnance, and Surveyed in the Years 1815, 1816, & 1817, By C. Greenwood, Wakefield. Leeds: Robinson, Son & Holdsworth; & Wakefield: John Hurst & C. Greenwood, 1817. Original colour. Dissected and laid on linen in four sections, total if joined 1840 x 2230mm. With metal box.