The complete collection of letters from Elena Ivanovna Roerich from the archive of the International Center of the Roerichs. The application contains the following 9 volumes: Volume 1 (1919 - 1933) Vol 2 (1934) Vol 3 (1935) Vol 4 (1936) Vol. 5 (1937) Vol. 6 (1938 - 1939) Vol 7 (1940 - 1947) Vol. 8 (1948 - 1950) Vol. 9 (1951 - 1955)