Union shades dyed in slightly acid bath : British patent no. 270⁰⁹ (1900)
Cassella Color Company · New York : Cassella Color Company · leaf 19
CREPONS DYED IN A SLIGHTLY ACID BATH. 0,1 % Diamineral Blue 3B pat. 0,1 % Diamine Heliotrope B 0,05% Formyl Violet S4B. 0,5 % Diamine Brown M 2 % Diamine Brown 3G 0,25% Diamineral Blue 3B pat. 0,1 % Naphtol Blue Black. 0,5 % Diamine Brown M 0,5 % Diamine Bordeaux S 1,5 % Diamine Fast Scarlet 5BFF… … CASSELLA COLOR COMPANY, NEW YORK.
Leopold Cassella & Co · Dyes and dyeing · Color in the textile industries
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
