| Fratelli D'Alessandri Pope Pius IX 1865 Albumen print 7 x 9 ins. Archive Farms The Patrick Montgomery Collection, Object No. 2018.544a LL/121454 (Alan Griffiths, 14 July 2022) This portrait is frequently credited to Bisson frères. This is the original with the Fratelli d'Alessandri blindstamp below the image
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