E.G. Pchelina (1895-1972) belongs to the galaxy of outstanding scientists who laid the foundation of Soviet Caucasian studies. She had a multi-faceted talent as a researcher and left a bright mark in archeology, religious studies, ethnography, folklore studies of the Caucasus, Armenia, Azerbaijan, and Central Asia. Most of her works, including those ready for publication, were not published during the scientist’s lifetime. The archive, bequeathed by her to the Academy of Sciences and transferred to LOARAN in 1973 by her daughter-in-law, the highly respected M.L. Pchelina, remained inaccessible until 2019. But the results of her research, reflected in published works and available from Reports of archaeological expeditions and documents in the archives of scientific institutions of North and South Ossetia, Moscow, St. Petersburg, Yaroslavl, were known and highly appreciated by archaeologists, ethnographers, historians. References to the materials of her archaeological collections from the Hermitage and museums of North and South Ossetia are often found in the works of modern researchers of the Caucasus. The name of the talented scientist has not been forgotten all these years. However, only now, with the beginning of work on the study of its archival heritage, it became clear what a wide scope of scientific problems is reflected in the unpublished works of the scientist, what global themes of the history of Ossetia have been studied and reflected in the monographs and articles of Evgenia Georgievna. In 2019-2021, scientific events “Bee Readings” were held in St. Petersburg, dedicated to the problems of studying the archival heritage of E.G. Pchelina and timed to the 125th anniversary of her birth. Thanks to the long-term efforts of the staff of the Archive of the Russian Academy of Sciences, the staff of the Hermitage, the Museum of Ethnography of St. Petersburg, the staff of SOIGSI, the grandchildren of Evgenia Georgievna, Nikolai and Mikhail Pchelin, as well as many people who are not indifferent to the fate and discoveries of Evgenia Georgievna, work with the archive is currently being successfully conducted and gradually reveals the great importance of the research conducted by Evgenia Georgievna in the Caucasus, which will now undoubtedly be known to a wide range of researchers.