The Virgin with four saints: the archangel Michael, Saint Catherine of Alexandria, Saint Apollonia and Saint John the Evangelist. Drawing by F. Rosaspina, c. 1830, after P. Vannucci, il Perugino.

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The Virgin with four saints: the archangel Michael, Saint Catherine of Alexandria, Saint Apollonia and Saint John the Evangelist. Drawing by F. Rosaspina, c. 1830, after P. Vannucci, il Perugino. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.