[28] For guild regulations over dye practices, see Molà, Silk Industry, 107-137. For examples of inexpensive printed booklets with recipes related to textiles, dyes or stain removal, see, for example, Fasciculo de molte cose meritevole; Opera nova chiamata Secreti secretorum; Opera nova de Ricette et Secreti; and Opera nova excellentissima (1529); Recettario nuouo (1546). I thank most warmly Michele Robinson for her research on these printed books and providing me with extensive information about these recipe books.