Okti︠a︡brʹskai︠a︡ revoli︠u︡t︠s︡ii︠a︡ v Latvii : dokumenty i materialy : 40 let, 1917-1957 /
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
Drīzulis, A.
Latvia.Valsts centrālais archīvs.
Vēstures un materiālās kultūras institūts (Latvijas PSR Zinātn̦u akadēmija)
Riga : Izd-vo Akademii nauk Latviĭskoĭ SSR,
1957.
John and Ljubica Erickson collection.
On leaf preceding t.p.: T︠S︡entralʹnyĭ gosudarstvennyĭ arkhiv Latviĭskoĭ SSR. Institut istorii i materialʹnoĭ kulʹtury Akademii nauk Latviĭskoĭ SSR.