The New York Times: „GIORDANO’S ‘SIBERIA’ FIRST TIME HERE, Another New Opera Produced by Mr. Hammerstein at the Manhattan. MR. BASSI INDISPOSED. His Place Taken by Mr. Zenatello at Short Notice. Mr. Sammarco and Mme. Agostinelli in Other Parts“, 6. Februar 1908, abgerufen am 17. Dezember 2016
