Description of the book "Paper of Bishop Porphyry of Ouspensky, donated by him to the Imperial Academy of Sciences according to the will of 1891" This work is a collection of documents left by Bishop Porphyry of Ouspensky, which were transferred by him to the Imperial Academy of Sciences in accordance with his will of 1891. The book presents letters, manuscripts and other materials related to his life, activities and spiritual reflections. The importance of these papers lies in the fact that they give a unique idea of the personal life and views of Ouspensky, his influence on the Russian church and society of the time. The collection includes rare and valuable documents that cover both religious and cultural aspects of the bishop's life, as well as his views on philosophical and moral issues. Work is an important historical source for studying Russian religious thought at the end of the XIX century, as well as for understanding the church's attitude towards science and education. These papers and their publication represent not only a valuable legacy for scientists, but also an important contribution to the preservation of historical memory of outstanding figures of Russian spiritual culture. Cover lost, there are traces of time (small scuffs and bends at the edges) Library stamps are present