During N.K. Roerich's Manchurian expedition, Roerich had corresponded with international organizations and coordinated activity for support the Roerich's Pact (International agreement for protection of artistic and scientific institutions and historical monuments).
Mantsurian tutkimusretken aikana Roerich oli ollut kirjeenvaihdossa kansainvälisten järjestöjen kanssa ja koordinoinut tukitoimintaa Roerich-sopimukselle (International agreement for protection of artistic and scientific institutions and historical monuments).