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Hydron blue pat. and hydron violet pat. printed on cotton (1900)

Cassella Color Company · New York : Cassella Color Co. · leaf 20

An illustration from Hydron blue pat. and hydron violet pat. printed on cotton, 1900, leaf 20
Hydron Colours on Cotton Yarn (Sell Shades) Hydron Blue B pat. 13 CASSELLA COLOR COMPANY, NEW YORK.

Dyes and dyeing

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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