1. An account of the trigonometrical survey carried on in the years 1791, 1792, 1793 and 1794 : by order of His Grace the Duke of Richmond, late master general of the ordnance Title: An account of the trigonometrical survey carried on in the years 1791, 1792, 1793 and 1794 : by order of His Grace the Duke of Richmond, late master general of the ordnance Date: [1795] Author: Williams, Edward, -1798. Collecting Area: Rare Books Call number: TA 544 W55X 1795 LOCAL