Inside Out Library · ExploreDiamine colours on cotton treated with sulphate of copper (1898)Cassella Color Company, Wm. J. Matheson & Co · Frankfort-on-Main : L. Cassella & Co. · leaf 7Dyes and dyeingInternet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.More pictures from Diamine colours on cotton treated with sulphate of copperMore like this
