The dyeing of mixed fabrics composed of wool and silk : with the dyestuffs of Leopold Cassella & Co., G.m.b.H., Frankfort o.M, American branch, Cassella Color Company (1906)
Leopold Cassella & Co., author, Cassella Color Company · Frankfort o.M. : Leopold Cassella & Co. · leaf 44
Dyestuffs for Dyeing the Silk subsequently. Tropaeoline RNP Rosazeine B Azo Orseille BB Brilliant Milling Green B
Dyes and dyeing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.