[The E. Chain Memorandum: the new documents and facts].

In the article, for the first time are introduced into scientific circulation declassified materials of the Russian State Archive of Economics that confirm the fact that in 1948 professor E. Chain of Oxford University provided the Soviet Union with technical documentation and producers for production of penicillin and streptomycin. The archival documents reveal the circumstances of conclusion of contract with E. Chain, its conditions, indicate causes of the problems with payment for his service and demonstrate the reaction of E. Chain himself and the representatives of the departments involved, allowing us to speculate about motives of their actions.