In the "Warsaw Yiddish newspapers", Num. 43, from 23 November (5 December) 1867, he was found in the following announcement:

"In my Bavaria [tea house] on the Nalevkes, and Nathanson heard House No. 2244a, he gave the famous Broder Singer production each evening around seven o'clock. He listened to this company, also to the first Viennese comic, Kafka Dubiensky, and the rare humorist [buff-comic] Binyamin Dentsis from Zhitomir, who very excellently presented his case."

Sh. E. from L. Dushman.