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"Grasselli dyes" & "Bayers dyes." (1910)
Grasselli Chemical Company, author · New York City, U.S.A. : The Graselli Ghemical Co., "Dyestuff Department" · leaf 13
ACID COLORS … Induline R 428 4% 1% 429 Induline 2 B 4% 1 % Induline 4 B 430 4% U 1Dyes and dyeing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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