HAMILTON, William. Observations on Mount Vesuvius, Mount Etna, and Other Volcanoes, London: T. Cadell, 1772, 8°, FIRST EDITION, 5 engraved plates and one folding map (occasional light spotting, some offsetting to text, small clean tear to map), contemporary marbled calf gilt (rubbed), bookplate of Thomas Graham -- William GILPIN. Observations on the River Wye, London: T. Cadell & W. Davies, 1800, 8°, 5th edition, 15 plates (spotting and browning to endpapers, title and a few leaves), contemporary calf gilt (corners bumped, spine rubbed with slight damage to head, front joint weak), later inscription to pastedown. With Humphrey's Picturesque Scenery in North Wales, (Carnavon, [n.d.]). (3)