国書データベース at Kokubunken 国文研. Combined database of “Union Catalogue of Early Japanese Books“, “Catalogue of Early Japanese Books at NIJL“ and "Database of Pre-Modern Japanese Works.“

国文学研究資料館(国文研)　電子資料館
(Kokubungaku Kenkyu Shiryokan aka Kokubunke, Denshi shiryokan)
30 databases of digital images, full text and indexes are available, but databases are only in Japanese.

在外日本古典籍所蔵機関ディレクトリ
This directory provides information on libraries and museums outside of Japan that hold old and rare Japanese materials, including manuscripts, printed books, and single sheet items, such as maps and ukiyoe prints. Each entry consists of the institution's address, name of contact person, collection size, collection description, viewing possibility, reproduction policy, availability of online and print catalogs, and other relevant information.

東京大学史料編纂所データベース検索

国際日本文化センター　データベース一覧

国立国会図書館古典籍データベース
These items are: Japanese items created before the end of the Edo period (1868), Chinese items created before the end of the Qing dynasty, including Nishiki-e (colored woodblock prints), E-zu (old maps and plans), and nationally-designated important cultural properties.

早稲田大学古典籍総合データベース
(古典籍) is rare books published before Meiji. Waseda is one of the best digital library in Japan. More than 300,000 volumes.

東京大学電子版貴重書コレクション
Include 富士川文庫、キリシタン写本、総合図書館所蔵古典籍、江戸期俳諧書.

Include rarebooks of pre-modern history of medicine and historical photos.

国立国会図書館デジタルコレクション

国立国会図書館デジタルコレクションの概要
The books acquired by the NDL up to 1968, parliamentary and statutory materials, and children's books are available (900,000 books as of August 2013). Among them, 350,000 books whose copyrights have been cleared, are also available on the Internet.

Can be search by keyword and view the detailed descriptions and digitized images of the records held at the Archive including records (120,000 frames of digitized images) of the cabinet meetings concerning the postwar reforms.

アジア歴史資料センター This site provides access to official documents of the Japanese Cabinet, the Ministry of Foreign Affairs, as well as the Army and Navy focus on Japan's historical relations in Asia.

データベース２０世紀・２１世紀年表検索ページ A database of historical information including bibliography related to the Northeast Asia.

Developed by Prof. Akihiko Tanaka at the Institute for Advanced Studies on Asia, University of Tokyo.

Contains Basic Documents of Postwar International Politics (E & J), Japanese diplomatic documents before the World War II (J only), Collection of Multilateral Conventions (E & J), etc. Search page can be accessed only from Japanese home page.

Contains digital images and full-text of 1000,000 articles between October 1911 and July 1945 from major national newspapers, local newspapers and newspapers published in ex-colonies of Japan, such as Taiwan and Manchuria.