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Direct dyestuffs (1900)
Sandoz, Inc · [Basel, Switzerland] : Sandoz · leaf 17
SANDOZ CHEMICAL WORKS, INC. … — 0-75 % 2 % 0-25 °/o Pyrazol Fast Yellow RL Pyrazol Fast Yellow RL (Formaldehyde) 2 °/o 0-25 °/o 0-75 °/o Pyrazol Fast Yellow RSW 2 °/o 0-25 °/o 0-75 o/o Chrysamine K 2Dyes and dyeing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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