Die Wollfarbstoffe
A wool dyestuff sample book issued in 1928 by the chemical firm J.R. Geigy A.G. in Basel for textile dyers and mill buyers. Each page mounts small rectangles of dyed wool cloth — deep blues, magentas, greens, gold, black — in a ruled column beside German product names and typed technical notes, giving designers ready-made flat colour chips, swatch-grid layouts and letterpress headers.
