Mrs. Stewart’s Bluing

August 26th, 2008 by

Mrs. Stewart’s Bluing (MSB) is a brand of fabric bluing agent that whitens fabrics by adding a blue dye, ferric hexacyanoferrate (Prussian blue).
Mrs. Stewart’s was founded by Al Stewart, a traveling salesman from Chicago, Illinois, who sold the formula to Luther Ford of Minneapolis, Minnesota, the owner of what is claimed to be the first [...]

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