Moĭ Pushkin. Statʹi, issledovanii︠a︡, nabli︠u︡denii︠a︡ /
Bryusov, Valery Yakovlevich.
Piksanov, Nikolaĭ Kirʹi︠a︡kovich,1878-1969.
Moskva,
1929.
A microfilm of the copy in New York Public Library.