| Serge Levitsky Müller Family 1855 (ca) Daguerreotype, with applied colour National Gallery of Canada / Musée des beaux-arts du Canada Id: 34398 LL/90719 Attribution discussed in: Lori Pauli, May 2019, "Out of the Blue: A Note on the Discovery of a Russian Daguerreotype at the National Gallery of Canada", National Gallery of Canada Review, vol. 10, pp. 51-58
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