LETTSOM (JOHN COAKLEY): THE NATURAL HISTORY OF THE TEA-TREE, WITH OBSERVATIONS ON THE MEDICAL QUALITIES OF TEA, AND ON THE EFFECTS OF TEA-DRINKING, London, by J. Nichols, for Charles Dilly, 1799, 4to, hand-coloured engraved frontispiece and 4 plates, one folding, 3 hand-coloured (title spotted, A1-4 dampstained at outer margin) [Dawson p. 344; cf. Nissen BBI 1182] -- ELLIS (JOHN): AN HISTORICAL ACCOUNT OF COFFEE, London, for Edward and Charles Dilly, 1774, 4to, one hand-coloured folding engraved plate (title spotted, other light spotting) [Nissen BBI 1584; Lowndes 733] -- WISSETT (ROBERT): A TREATISE ON HEMP ... WITH OBSERVATIONS ON THE SUNN PLANT OF INDIA, London, 1808, first edition, 4to, engraved frontispiece and 3 plates (frontispiece offset, outer margin slightly dampstained throughout) [Lowndes 2957], together 3 works in one, 20th century black morocco-backed cloth.