XYC269002 Colour Chart, from \'Hints to form the taste and regulate ye judgement in sketching landscape\', c.1790 (pen & ink with w/c on paper) by Gilpin, Rev. William (1724-1804); 21x28 cm; Yale Center for British Art, Paul Mellon Collection, USA; (add.info.: mountainous; countryside; rural; painting guide; artistic; artist; instruction; technique; method; execution; colour theory; practice; treatise; education; c18th; Georgian;); English, out of copyright.