Waschechte Diazobraun und Diazoolive = Diazo browns and diazo olives fast to washing = Diazo bruns et diazo olive solides au lavage.
A 1911 dye sample book published in Elberfeld by the Farbenfabriken vorm. Friedrich Bayer & Co., printed in German, English and French for dyers and textile buyers testing cotton colours. The pages show rows of dyed cotton skeins, each labelled with a number, arranged in graded shades of brown and olive, so a designer can judge how such warm earthy tones sit side by side and how paired swatches read as a set.
