“Black from Luik/Liège. You can also make good black coal if you grind it well with clean water / and process it with clean gum water. This is very good black for painting woolen fabrics and is also called blacksmith-coal black.” Anonymous. 1600-1650. Schoone consten ende secreten, Rome, Bibliotheca Apostolica Vaticana, Ms. Lat. 7279: fol. 24v, 25r. https://digi.vatlib.it/view/MSS_Vat.lat.7279, last accessed 9 November 2020; here cited after Braekman. 1994. Antwerpse ‘consten ende secreten’ voor verlichters en ‘afsetters’ van gedrukte prenten: p. 116.
[1] Veen. 1650-1687. De Wetenschap en[de] Manieren: Without page.