By Frederick Hartt, David G. Wilkins
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By William Gaunt
By Jean E. Feinberg
By Palau y Fabre, Josep
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By Virginia.Chieffo Raguin
By David Hopkins (Professor of Art History, University of Glasgow)
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By Elena Crippa
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By Catherine Bernard-Gruber, Armelle Vanazzi
By Veronica Gould
By Anne Lyles, Sarah Cove, John Gage, Charles Rhyne, Franklin Kelly
By Eric Broug
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By Heidi Zojer, John Klapper, Ruth Whittle (University of Birmingham, UK), William J Dodd (University of Manchester, Christine Eckhard-Black (University of Oxford
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