Career
Along with Aleksey Yachmenev, who like Sivstov was Aleut himself, Sivstov accompanied Waldemar Jochelson on his 1909-1910 ethnological studies on the Aleut.
Along with Aleksey Yachmenev, who like Sivstov was Aleut himself, Sivstov accompanied Waldemar Jochelson on his 1909-1910 ethnological studies on the Aleut.