The article is a short biography and the analysis of the heritage of Maria Arkadievna Rashkovskaya (1944–2023), a prominent archivist and archaeographer, who devoted half of the century to the work at the Russian State Archives of Literature and Art. The majority of her writings are masterful scientific descriptions of the personal funds of outstanding figures of Russian culture: starting with L.N. Tolstoy’s associates and ending with David Samoylov. And yet, the center of her research and archaeological works was the manuscript heritage of Boris Pasternak. Maria Arkadievna discovered, studied, archaeographically processed in detail and introduced into the Russian and international cultural circulation hundreds of Pasternak’s documents which, in some cases, were not only misplaced in personal or institutional funds, but were also lost in waste paper piles (correspondence, essays, the «Petersburg Prose» miscellany). Without her writings, published in Russia and abroad, it is hardly possible to imagine the life, the creative activity and the great poet’s circle if contacts. Another vital area of Maria Arkadievna’s work and research was the processing, description and publication of the materials of the Christian thinker, memoirist and art historian Sergey Nokolaevich Durylin (1886–1954). In her last years of life, Maria Arkadievna’s archaeographic activity also spread throughout the field of multimedia publications. The depth of her spiritual and moral fabric has not only affected the nature of her work, but also the warmth of her relationships with the colleagues.