Four drawings by Jan Mammen (1899-1978). (1) (Mill at the edge of a river).

Drawing in black ink and gouache on blue paper, 28.5 x 43.5 cm., monogrammed bottom right (tears/ defects but restorable, atmospheric evening view).

(2) "Wapse". Drawn view of a farm in black and coloured chalk, 29.8 x 48.5 cm., titled and dated "'18" bottom left (defects in corners); (3 and 4) Another two similar views of farms in the same size (total 4).