Photograph of Ivan Vasil'evich Ershov (Yershov) in the role of Charles VII from César Cui's opera The Saracen; date of photo not given, but Ershov played the role in the premiere production at the Mariinsky Theater, beginning 2 November 1899. (Source for production information: Bernandt, G.B. Словарь опер впервые поставленных или изданных в дореволюционной России и в СССР, 1736-1959 [Dictionary of Operas First Performed or Published in Pre-Revolutionary Russia and in the USSR, 1836-1959]. Москва: Советский композитор, 1962, p.259.)
Printed source of image: Cui, César. Избранные письма [Selected Letters]. Составитель, автор вступительной статьи и примечаний И.Л. Гусин. Ленинград: Гос. муз. изд-во, 1955, p. 247.
Photograph of Ivan Vasil'evich Ershov (Yershov) in the role of Charles VII from [http://en.wikipedia.org/wiki/C%C3%A9sar_Cui César Cui's] opera ''[http://en.wikipedia.org/wiki/The_Saracen_%28opera%29 The Saracen]''; date of photo not given, but Ershov pl