78/6172 Anonymous (19th cent.). (Sketchbook), (31) lvs w. mainly pencil sketches and drawings, occas. w. watercolour, a few with identification of location, i.a. "Andenne" [sic], "Liège" and several drawings of trees, 27,5x21 cm. or vice versa, loose in contemp. hvellum portfolio w. ties. - AND 1 other anonymous sketchbook, also 19th cent., 27 leaves w. pencil sketches, occas. w. watercolour, loose in contemp. hleather portfolio (w. vaguely visible artist's or owner's name in pencil on upper pastedown " [J.?]A.B. de Groot 13 Juny 1838").