The National Institute of Japanese Literature (国文学研究資料館, Kokubungaku Kenkyū Shiryōkan), or NIJL, was established in May 1972.
The NIJL provides several useful tools for the scholar of Japanese literature, including a compilation of research published yearly in the journal Kokubungaku Nenkan (国文学年刊).
It publishes several series of scholarly journals, copies of its microfilm archives, and many multi-volume compendiums of historical and contemporary Japanese literature, such as the Nihon koten bungaku taikei or NKBT.
Several of these are open to the public, others (particularly the full-text databases such as the Nihon koten bungaku taikei) are only available to scholars who must apply through the NIJL website for a username and password.
Full-text databases can be used to search for specific words and passages in historical works of literature, however they are not suitable for reading large sections of text.