Saint Mary (the Blessed Virgin) with the Christ Child and Saint John the Baptist. Mezzotint with etching by J.H. Mortimer after G.F. Barbieri, il Guercino.

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Credit

Saint Mary (the Blessed Virgin) with the Christ Child and Saint John the Baptist. Mezzotint with etching by J.H. Mortimer after G.F. Barbieri, il Guercino. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.