The Theory and Practice of Color
A 1918 color instruction manual by Bonnie E. Snow and Hugo B. Froehlich, issued by the Boston art-education publisher L. Prang & Co. for drawing teachers and students. Numbered plates show flat printed color circles, twelve-step hue wheels with neutral gray centers, and rows of labeled swatches for tints, shades, complements and grayed mixtures catalogued palettes ready to lift.









