[TRAVEL & EXPLORATION].?Observations on the Present State of Denmark, Russia and Switzerland. In a Series of Letters.?London: T. Cadell, 1784. 8vo (210 x 120 mm). (Occasional spotting to text). Modern brown calf?backed marbled boards, eighteenth?century burgundy gilt morocco lettering?piece gilt, spine ruled in gilt by Vernon Wiering. FIRST EDITION. An epistolary account of a journey spanning between May 1777 and October 1782, wherein the anonymous author observes and relates economic and other aspects of the places visited.