Substantive Farbstoffe auf Baumwoll-Stückware. Band II : Entwicklungs- und Nachbehandlungs-Farbstoffe = Substantive colours on cotton piece goods. Volume II : dyestuffs for developing and for after-treatment
A 1920 dyers' pattern book from the Agfa-Griesheim sales company in Berlin and Frankfurt, issued in German and English, showing cotton fabric swatches dyed with substantive colours. Each swatch pairs a direct dye on the left with the same dye developed with Beta-Naftol on the right, at stated percentages, so a designer can compare how the second treatment deepens or shifts the shade.
