http://24.media.tumblr.com/tumblr_mbslzmADYC1qz4juzo1_500.jpg
Early examples of color-wheels and color charts. http://imprint.printmag.com/color/the-wondrous-color-wheel-part-1/
Tagged: iconolith, color via my Tumblr http://iconolith.tumblr.com/post/33439953364