The main three members of Opojaz left an epistolary heritage of the greatest importance — a documentary source, human testimony and a literary specimen all in one. Overall, a special place goes to their correspondence during 1928 – 1929 which gives evidence of the existence of a project to relaunch Opojaz with which Jakobson, established in Prague starting in 1920, was associated. To highlight this episode, we have selected four letters from the correspondence between Šklovskij and Jakobson and two letters from the correspondence between Šklovskij and Tynjanov, translated into French for the first time. These texts show that there was no basic divergence between the formalists in Russia and Jakobson at the end of the 1920s, and they reaffirm the strength of the bonds that brought them together.