V Okti︠a︡brʹskie dni /
Krupskaya, Nadezhda Konstantinovna,1869-1939.
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
Moskva : Politizdat,
1957.
John and Ljubica Erickson collection.