Union shades dyed in slightly acid bath : British patent no. 270⁰⁹ (1900)
Cassella Color Company · New York : Cassella Color Company · leaf 11
DIAMINE COLOURS DYED IN A SLIGHTLY ACID BATH. 7 2% Diamine Fast Yellow FF pat. 8 HU 2% Oxy Diamine Yellow TZ. 2% Diamine Fast Yellow M pat. 2% Oxy Diamine Yellow CR. 2% Diamine Orange G. … 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.
