C. McCahon Mapua Landscape 1939 (pencil, b.c.-b.r.); Mapua 1939 (on reverse, l.c.)
1966 McCahon: An important collection of watercolours and drawings dating from 1937 to 1965
Barry Lett Galleries
21/2/1966 - 3/1966
1990 Rosalie Gascoigne, Colin McCahon: Sense of Place
Ivan Dougherty Gallery
10/6/1990 - 28/7/1990
Gordon H. Brown suggests that McCahon's date of 1939 may be retrospective and that the drawing more properly dates to around 1942.