Color and its application to printing
Color and its application to printing is a 1911 Chicago trade manual by E. C. Andrews, published by the Inland Printer for working printers and designers. Its pictures are plain line diagrams and tonal swatches: a prism and light-ray diagram on black, a polar colour wheel with a scaled ring of numbered segments, and grey value strips labelled 10 to 90. A designer could take from them the logic of systematic colour charting and the stepped value scale as a model for organising palettes.
