[112] “Meekrap zwart” in Natalia Ortega Saez, “Black Dyed Wool in North Western Europe, 1680-1850: The Relationship between Historical Recipes and the Current State of Preservation” (Doctoral thesis, University of Antwerp, Faculty of Design Sciences, 2018), 67-68; “Waid-Krapp Schwartz” in Renate Woudhuysen-Keller, “Das Farbbüechlin Codex 431 aus dem Kloster Engelberg: ein Rezeptbuch über Farben zum Färben, Schreiben und Malen aus dem späten 16.” Jahrhundert, vol. 2 (Zürich: Abegg-Stiftung, 2012), 37; see also William Lewis, Commercium Philosophico-Technicum; or, The Philosophical Commerce of Arts: Designed as an Attempt to Improve Arts, Trades, and Manufactures (London : H. Baldwin 1763), 421.