William Kentridge, Gash Gold, Vermilion, 2012, Drawing: Watercolour and pastel on book pages
Antique 19th century watercolor charts by Winsor newton
British Library. 1620-1646, Sir Theodore de Mayerne, Pictoria, sculptoria et quae subalternarum artium (the 'Mayerne manuscript'). Miscellaneous notes on the subject of artistic techniques, including the making of pigments, oils and varnishes, the priming and preparation of surfaces for painting, and the repair and conservation of paintings. The manuscript also contains notes of chemical experiments, including diagrams and sheets of pigment samples.