Ofit︠s︡erskie zvezdy /
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
Semenov, Vasiliĭ Ivanovich.
Moskva : Izd-vo DOSAAF,
1984.
John and Ljubica Erickson collection.