The article analyses the academic heritage and the handwritten "Nachlass" of one of the lesser known Russian scholars of Byzantium, M. N. Krasheninnikov. A student of V. K. Ernstedt, he began his studies as a classicist, but then devoted his academic career to the cause of publishing criticial editions of heretofore unpublished texts related to Late Antique and Byzantine history. Thus he almost beat J. Haury to publishing his own version of the "Wars" of Procopius of Caeasaria and C. de Boor - to publishing his redaction of the "On the legates" and other tenth-century encyclopedic collections of materials in Greek. Despite the fact that few of texts prepared by him were published (due to various reasons including the Russia's loss of Estland in 1918 and the repressions which took place in the USSR since the late 1920s), these materials still contain much interesting and relevant for today's research. This article describes the archive of M. N. Krasheninnikov and analyses the materials in regards to their relevance for contemporary Byzantine studies and to the methods employed by this scholar.