HEYSEN, Hans (1877-1968) 'Storm Clouds, Flinders Ranges, SA,' 1932. Ex estate sale Late Sir Reginald Marcus Clark and Lady Clark, 15th & 16th June 1954, lot 108. Clipping from this auction verso; also hand-written letter from the artist 12/7/1933 describing the work: 'I personally regard this picture as one of my most successfully balanced watercolours of the far North.' W/Clr 32x40cm Estimate $7,000-11,000