Allcolour study seriesconstructed planes seriesflat object serieshorizonother worksketchessquarevariants double horizon: for balandro double horizon: empty landscape double double horizon (with slope) double, double horizon (mauve brown diptych) double, double horizon (oak shakes) horizon and small horizon horizon (copthorne suite pink) horizon (copthorne suite blue) horizon (copthorne suite orange) horizon (copthorne suite green) horizon (copthorne suite mauve) horizon (copthorne suite yellow) variance one double, double horizon (pink yellow diptych) square not square two flat forms I colour study 4 units 3 forms 4 colours (YGB 1) (2) & (3) colour study 4 units 3 forms 4 colours (PBY 1) (2) & (3) variance two variance three colour study 4 units 3 forms 4 colours (GYP 1) (2) & (3) variance four colour study 4 units 3 forms 4 colours (BPG 1) (2) & (3) colour study 4 units 3 forms 4 colours colour study 4 forms brown green yellow rose colour study 4 forms blue green yellow rose colour study 3 forms (rose square) two flat forms II two-squares colour study, three elements colour study, four elements colour study, flat yellow colour study, six forms colour study, yellow/red/brown colour study pink/orange/blue + yellow/green/mauve colour study, pink/yellow/brown sketches flat fold colour study green/pink/blue green/orange/pink construction white/white/white construction pink/white/green construction green/white/pink/white construction green/pink construction vague object unsure object unspecific object uncertain object thin object ambiguous object white triangle / curves white trapezoid / curves