That's Just Nuts! George Washington Carver: Textile Dye & Pigment Chemist
The soils of Macon county have yielded to the great chemist's magic and given up many dyes and colors of gorgeousness and splendor. The blue, for instance, is made from red clay by oxidizing it intermittently far six successive operations, producing a color which is described as 70 times bluer than the bluest blue. (Moss, 1930, p.58)
This is a proceedings from International Textile and Apparel Association Conference 71 (2014): Posted with permission.