Reference to Berta Weiss, singer and dancer, and about her sisters

Reference to Berta Weiss, singer and dancer,who was travelling with a show to Petersburg and Moscow. Her sisters, Olga and Rossa, lived in Petersburg and worked there in a theatre (their pseudonym was Semmel), they were also prostitutes.
The National Archives in Krakow
Fonds: C.K. Dyrekcja Policji w Krakowie 1849-1919
Signature: DPKr 76
Page/Card Number: L.1179/pr/11
Language: Polish
Creation Date: 1911
Place of origin: Kraków
Geographical names: Cracow, Moscow, Sankt Petersburg
Organizations and institution: Imperial and Royal Directorate of Police in Krakow
Surnames: Weiss Berta , Weiss Olga , Weiss Rosa
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