The Galleria dei Busti of the Museo Pio Clementino-Attributed-to-Abraham-Louis-Rodolphe-Ducros-and-Giovanni-Volpato (皮奥·克莱门蒂诺博物馆的巴黎大教堂-归因于亚伯拉罕·路易斯·鲁道夫·杜克罗斯和乔瓦尼·沃尔帕托)
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Flat and Uniform Application of Colours at A, and Gradated Effect of the same Colours,used with a Full Brush at B (1912) --James Ward (Irish, 1851–1924)