Die Farbschule. Eine Anleitung zur praktischen Erlernung der wissenschaftlichen Farbenlehre
A teaching manual in scientific colour theory by the chemist Wilhelm Ostwald, with Ernst Stern and Hans Wagner, published by Unesma in Leipzig in 1919 for students and practitioners learning his colour system. The plates are grids of tipped-in colour squares, numbered or code-lettered, set on black or grey grounds against tan card — usable as muted period palettes, swatch-grid layouts and numbered chart typography.
