First edition, 8vo (190 x 120 mm), 32pp., facsimile letter tipped-in, later quarter calf by Birdsall & Son, Northampton, slightly rubbed, red morocco spine label lettered in gilt. [Sold with:] ----. The Result of a View of the Great Level of the Fens, Taken at the Desire of His Grace the Duke of Bedford, &c. Governor, and the Gentlemen of the Corporation of the Fens, in July 1745. First edition, 8vo (190 x 120 mm), vi, [2], 74pp., without the map, later quarter calf by Birdsall & Son, Northampton, slightly rubbed, red morocco spine label lettered in gilt.