The book “Letters of P. F. Belikov (1975-1982)” from the series “Archives. Research” (Issue IV) presents a collection of letters by Pavel Fedorovich Belikov, a researcher of the creative heritage of the Roerich family, to a physician, V. I. Nichiporuk (Kyiv, Ukraine). The Letters currently in possession of the Department of Manuscripts of the Odessa Roerich House Museum were donated in 2007 by V. I. Nichiporuk, together with letters of Galina Vasilyevna and Kirill Pavlovich (wife and son of Belikov), rare photographs, books, newspaper and magazine publications with articles by P. F. Belikov. Belikov’s letters are published for the first time, in the author’s edition, covering the period from 1975 to 1982. P. F. Belikov is the author of scientific publications and monographs: “Roerich,” published in the series “The Life of Outstanding People,” “Roerich” (The Experience of Spiritual Biography) and “Sviatoslav Roerich. Life and creativity.” Belikov is also known for his rich epistolary heritage — correspondence with N. K. Roerich and his sons.