Hydron blue G and R : patented : paste 20% and powder
A 1911 New York sample book issued by the Cassella Color Company for textile dyers and manufacturers, showing Hydron blue G and R dyes applied to cotton. The plates are swatch cards: striped cloth in blue and white, solid dyed fabric, and rows of graded blue tints numbered down the page. A designer could take from them the look of blue and white ticking stripes, and a range of navy-to-indigo tonal steps for limiting a palette.
