Hydron blue G and R, patented paste 20% and powder (1911)
Cassella Color Company · New York · leaf 38
eezing rollers see page 12. No. 49. 4% Hydron Blue G pat. Paste 20%. No. 50. 8% Hydron Blue G pat. Paste 20%. No. 51. 12% Hydron Blue G pat. Paste 20%. No. 52. 4% Hydron Blue R pat. Paste 20%. No. 53. 10% Hydron Blue R pat. Paste 20%. No. 54. 16% Hydron Blue R pat. Paste 20%. The quantities of… … 50 51 HYDRON BLUE B. 52 53 54
Dyes and dyeing
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