The correspondence is almost entirely devoted to literary topics (there were, in fact, no other points of intersection besides literary ones). For the history of the Experiments, it represents a primary document, as, indeed, for all post-war emigration literature. By the time Roman Nikolaevich Grinberg (1893–1969) became co-editor of the Experiments, he had a rich biography behind him: he sat in Lubyanka prison (1921), was a successful businessman in Berlin (1924–1925), then in Italy (1926–1929), a stock exchange player and philanthropist in Paris (1930–1939), then in New York (from 1940). But he was always drawn to literature, from a young age, and the editorship of “Experiments” and then “Air Routes” was by no means an accidental episode in his biography, but, on the contrary, an absolutely natural and very successful completion of it. Adamovich, as can be seen from the correspondence, From the very beginning, Grinberg attracted him to “Essays” as an authoritative author and consultant, consulted with him on a variety of issues, from significant to trifles, and rightly believed that his presence in “Essays” would decorate and ennoble the magazine. After Greenberg left “Experiments” in September 1954, the correspondence died down for a while and revived again in January 1959, when Greenberg started publishing “Air Routes” (1960–1967) and invited Adamovich to collaborate. The correspondence finally stopped in the fall of 1967, shortly before Greenberg’s death. From the book: “If a miracle is at all possible abroad...”: The era of the 1950s. in the correspondence of Russian emigrant writers. M., 2008. pp. 355–422.