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It is possible that your selected artist is not included in a book or exhibition catalog. Besides finding scholarship that places their artwork in context to larger art movements and practices - such as the subject headings linked on the Recommended Resources page - you will also use web resources.
2. Search the website of galleries and museums where your artist has exhibited. For instance, Sophie Wallace had a solo show in 2016 at the Catinca Tabacaru Gallery. They have images, a press release, and news coverage of the show.