James Ward The Primaries, Red, Green and Ultramarine-Blue, with Their Complementaries, or Secondaries, Blue-Green, Purple and Yellow. (1912) from $9.99
James Ward Modification of Tone and Hue of a Colour when Placed on or Near Different Colours (1912) from $9.99
James Ward Five Pairs of Complementary Colours Forming a Chromatic Circle. Each Colour Has its Complementary Directly Opposite (1912) from $9.99