| Louis De Mauny (Boulogne s/Mer & London) Backmark for "Louis De Mauny - Artiste Peintre & Photographe - 24, Quai de la Douane, Boulogne s/Mer & 333 Euston Road N.W. London" n.d. Carte de visite, backmark Private collection of James V. Burke LL/118724
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