This database contains materials formerly owned by Kazuo Okochi and Mikio Sumiya, who served as presidents of the Council on Social Security System. The database contains a wide range of materials from the Council on Social Security System and other related councils and study groups, as well as surveys and statistics.

This is a database of source documents that trace the footsteps of defence policy, consisting of the 'Defence Agency Historical Materials', a group of documents collected for the compilation of the Defence Agency History, and the 'Kubo Documents' and 'Ito Documents', personal documents of defence bureaucrats.

Commercial and Trade Relations Between Tsarist Russia, the Soviet Union and the U.S.,1910-1963

This collection of U.S. State Department Central Classified Files relates to commercial and trade relations beginning in the Tsarist Russia period and extending through Khrushchev period in Soviet history. It contains a wide range of materials from U.S. diplomats including materials on treaties, general conditions affecting trade, imports and exports, laws and regulations, customs administration, tariffs, and ports of entry activities.

Module 3 : Diplomacy and Political Secrets, 1869-1950
This is the collection of 4,204 carefully selected and digitized China-related documents from the British Library's holdings of former Indian Ministry documents from the Political and Confidential Sector, Burma Bureau, and Military Sector.
These documents include intelligence materials, reports, memoranda, letters, intelligence logbooks, expedition logbooks, maps, etc., by the former Ministry of India concerning mainland China and the border areas with British India, namely Xinjiang, Tibet, and Yunnan.

It contains declassified documents of the U.S. federal government and is fully text searchable.
It contains classified documents from approximately 60 U.S. government agencies, including the State Department, Department of Defense, CIA, FBI, National Security Council, White House, etc.

The Making of the Modern World (MOMW) is a series of approximately 87,000 European publications on social and economic history spanning 500 years from the mid-15th century to the mid-20th century. The original holdings include The Goldsmiths' Library of Economic Literature at the University of London, the Kress Library of Business and Economics at Harvard University, the Seligman Collection at Columbia University and the Hiroshima University of Economics, and the History of Economics Collection at the University of Kansas.

This is a complete collection of all 67 volumes of the records of the Tokyo Military Tribunal for The February 26 Incident, which were discovered by the Tokyo District Public Prosecutor's Office and long said to "not exist".

This is the vast collection of documents left by Goto Shinpei (1857-1929), a bureaucrat and politician who was active from the Meiji era to the early Showa era.
Goto Shinpei played an active role in the administration of Japan's colonies, including serving as the Civil Administrator of the Taiwan Governor's Office and the first president of the Manchurian Railway Company. He also held important positions such as Minister of Communications, Minister of Internal Affairs, Minister of Foreign Affairs, Mayor of Tokyo, and President of the Imperial Reconstruction Agency.

This is the database of materials holded by Kiichi Miyazawa (1919 - 2007), the 78th Prime Minister of Japan.
The collection covers the period when Miyazawa held important positions, and consists of original materials such as unpublished diaries and memos, diplomatic documents, ministry and party policy materials, and correspondence with key figures in Japan and abroad.

This is the online database of Yuho-Bunko Collection, which held by The Research Institute for Oriental Cultures Gakushuin University. It contains a large number of valuable materials on Korea during the colonial period. The collection includes memos, reports, and other internal documents left behind by bureaucrats and officials of the Governor-General's Office of Korea, which provide a glimpse into the actual state of colonial rule policies.