HICKEY, Dale (b.1937) (8) 'Gridded Void'; 'To L.A.'; 'Separate Worlds'; 'Black Thing'; 'Dark Thing'; 'Five Negatives'; 'Focus on the Gravel'; and 'Concave & Convex Vessels'. Lithograph (8) 3/30 49x45cm each (sheet)Estimate $700-1,200