The colorist, designed to correct the commonly held theory that red, yellow, and blue are the primary colors, and to supply the much needed easy method of determining color harmony; together with a system of color nomenclature and other practical information for artists and workers or designers in colors (1908)
Hatt, Joseph Arthur Henry, 1861- · New York, Van Nostrand · leaf 3
Jt#/6 oj —
Color
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.