Wichers Wierdsma, Roline (1891-1970). (Tree).

Drawing, black chalk, 46,5x61,5 cm., (vaguely) monogrammed "RW", mounted on board along upper margin.

Idem. (Close-up view of mooring posts along a pier, a beach in the distance). Drawing, black chalk, 69x54 cm., monogrammed in (later?) pencil "RWW" in lower margin.

AND 2 others by the same, both monogrammed in pencil "RWW" (1x dated "1917"), i.a. a study in black chalk of a gnarled tree trunk (36x60,8 cm. Laid down on board). - ADDED: a somewhat similar drawing by S. DETMERS (black chalk, 40,5x51 cm., signed).