Inside Out LibraryApplication of the benzidine colours in all branches of printing (1898)Farbenfabriken Bayer Aktiengesellschaft · Elberfeld · leaf 26Dyed with :6% Benzo Chrome Black Blue B. Dyed with: 1% Benzo Fast Black.Textile fabrics · Dyes and dyeingInternet Archive · Clark Art Institute Library · Public Domain Mark 1.0. Free to use for anything.More pictures from Application of the benzidine colours in all branches of printingMore like this
