Abstract
There are not only few academic works on this theme in Japan, but also few archival documents accessible to the researchers. The documents in the Russian archives, except minor ones published, have to be read on the spots and still more there are many restrictions and even prohibitions to the access. For example, the documents of each internee (uchetnaia delo and uchetnaia kartochka) in the RGVA (Rossiiskii Gosudarstvennyi Voennyi Arkhiv) are accessible only to the relatives. The GHQ documents (censored letters of the internees and interrogations of the repatriates) owned by the Hoover Institute, Stanford University and partly in the National Diet Library of Japan, have been scarcely used. As for the Japanese documents, individual records made at the landing time and the copies of above-mentioned Russian documents owned by the MHL (Ministry of Health and Labor) are also accessible only to the relatives. In spite of these difficult conditions, Japanese researchers have recently read the documents and written articles on the Lager' system, the real conditions (coldness, hunger and heavy labor) of the Japanese internees, and so-called democratic movements (anti-militarist at first, then pro-Soviet) etc. The author especially emphasizes organized studies among Japanese researchers as well as in cooperation with those of former Soviet Union.
