Bound pattern cards, with samples showing colour shades on Sisal Yarn. Shades 1-48, using acid dyestuffs; 49-83 using Sirius Supra and Sirius dyestuffs and shades 84-99, using Benzo dyestuffs. Introductory text in German, English and French. A visually attractive collection, issued by the leading German chemical company Bayer, which was founded on the development of dyestuffs. [43624]