National developed dyes for cotton yarn / manufactured by National Aniline & Chemical Company, Inc.
A 1917 dye sample card issued by the National Aniline and Chemical Company of New York for cotton yarn dyers and textile trade buyers. Its pages show rows of dyed swatches, each labelled with a dye name and a percentage strength plus an application code such as Direct or Dev. B. A designer could draw on the saturated reds, blues, greens, and blacks as a historical colour reference for woven fabric palettes.
