Istorii︠a︡ Velikoĭ Okti︠a︡brʹskoĭ Revoli︠u︡t︠s︡ii /
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
Sobolev, P. N.(Petr Nikiforovich)
Moskva : Izd-vo Akademii nauk SSSR,
1962.
John and Ljubica Erickson collection.