London: W. Strahan and T. Cadell in the Strand, 1788. First editions. First state of volume 1 (with all errata uncorrected and cancels as called for). 6 volumes, quarto (271 x 216 mm, but vol one 264 x 213 mm). Modern full speckled calf to style. Five raised bands with red and blue morocco spine labels. Plain end papers. Each volume with the book label of Dr. Sydney Ross (1915-2013), professor at Rensselaer Polytechnic Institute. Engraved portrait frontispiece by Hall after Joshua Reynolds (dated 1 February 1780) bound into volume 2, as issued; 2 engraved maps in vol. 2; 1 engraved map in vol. 3 (Western map bound into Vol 2 and Eastern map bound into Vol 3). Complete with all half titles. Bindings in excellent condition overall. Each volume housed in a full speckled calf clamshell box. With the cancel leaves and uncorrected errata as called for by Norton: vol. 1 with cancels X4 and a4 (so signed), errata leaf uncorrected and bound at the beginning (leaves a and a2 bound out of…