Nikolai Kalmakov aka Nicholas Kalmakoff aka Nikolai Konstantinovich Kalmakov aka Николай Константино
Nikolai Kalmakov aka Nicholas Kalmakoff aka Nikolai Konstantinovich Kalmakov aka Николай Константинович Калмаков (Italian-Russian, 1873-1955, b. Nervi, Italy) - Явление (The Apparition), Painting -- source link
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