Spasitelnii︠a︡t za Bŭlgarii︠a︡ : Otechestven front : statii i rechi, spomeni /
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
Dimitrov, Georgi,1882-1949.
Sofii︠a︡ : Izd-vo na Otechestven front,
1975.
John and Ljubica Erickson collection.
Otechestven front.