Color mixing guide for artists, painters, decorators, printing pressmen, show card writers, sign painters, color mixers : gives color mixtures by parts (1923)
King, John L · New York : Ogilvie Pub. Co. · leaf 4
PRIMARY AND SECONDARY COLORS All colors in this “color chart” are made from the primary colors, yellow, red and blue. … SECONDARY AND TERTIARY COLORS Overlapping plates on this sheet are printed in full color. Tints are avoided in order to show secondary and tertiary colors in full strength. To lighten secondary or tertiary colors add more of the lightest color of the combination. For example, if a lighter shade of…
Paint mixing · Pigments · Colors
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.