[5] In order to avoid repetition, it was strived for to only include one representative example of the various inter-correlated recipe compilations. Sources which belong to one recipe-family but mention different recipes for black watercolour were cited indeed, e.g. four manuscripts belonging to the Strasbourg-family.  See Neven, The Strasbourg Manuscript: A Mediaeval Tradition of Artists’ Recipe Collections (1400-1570), 30, table 2 ‘List of the manuscripts of the Strasbourg Tradition’. Later editions of publications were selected if new and unique information was added, as is the case for instance with the first (1634) and third (1654) edition of Bate, The Mysterys of Nature and Art.