[19] A key source is Jo Kirby, Susie Nash, Joanna Cannon (eds.), Trade in Artists’ Materials: Markets and Commerce in Europe to 1700, containing the already cited contributions of Nash and Campbell, as well as Kubersky-Piredda, ‘The market for painters’ materials in Renaissance Florence’, 232 (nero, nero di fuomo/soot); Spear, ‘A Century of Pigment Prices: Seventeenth Century Italy’, 286 (e.g. terra negra/black earth, negro fume/soot, nero die Persico/peach stone black, osso di corno/burnt horn and lapis nero/black chalk); Burmester et al., ‘Pigmenta et Colores: The Artist’s Palette in Pharmacy Price Lists from Liegnitz (Silesia)’, table 1, 319-322 (antimonite, mummy, peach stones, ivory black); Heydenreich, ‘The Leipzig Trade Fairs as a Market for Painters’ Materials in the Sixteenth Century’, 302, 310 (kienruß/conifer soot); Kirby ‘Trade in Painters’ Materials in Sixteenth-Century London’. Table 2, 347 (black chalk, sea coal, lamp black, and various blacks).