Ministry of Foreign Affairs collects, classifies, and preserves Japan’s diplomatic records including valuable treaties and other historical documents from the end of the Tokugawa period to the present day. (In Japanese)

(In English)

アジア歴史資料センター ・国立公文書館 The center aims to provide Internet access to Asia-related official documents held by three national archival collections. 225,000 catalog records and 2.7 million images are available so far.

国立公文書館 Searchable catalog of 490,000 volumes of Naikaku bunko, which includes official documents since the Edo government and other historically significant books and manuscripts.

University of British Columbia Library Open Collections

幕末明治期日本古写真画像データベース・長崎大学 Searchable archive of 5,414 photographs of Nagasaki and other parts of Japan taken during the latter half of the 19th century (1860 -1920) . An English / Japanese site.

National Diet Library, Japan (NDL) Digital Exhibitions

Shows photos of Japan between the 1860s and 1930s

Wax Museum devoted to Sakamoto Ryoma

(NARA) The Nazi War Crimes and Japanese Imperial Government Records Interagency Working Group (IWG).　

Extensive list and descriptions of naval battles, land battles, and aircraft during the WWII.

Explores diverse portrayals and perceptions of the young men who carried out suicide attacks near the end of World War II.

日本空襲デジタルアーカイブ a bilingual digital archive dedicated to the international dissemination of information about the United States Army Air Force air raids against Japan.

shows what happened in a local city NAGAOKA, Niigata, just two weeks before the Japan's surrender to World War II.

"Commissioned by the CIA, carried out by the Harvard program for the Study of Intelligence and Policy, examining the final months of WW2, including plans for invasion and the use of the atomic bomb."

Documents on the decision to use atomic bombs in Hiroshima and Nagasaki.

The author shares his findings and resources of his study on atomic bombing in ending the Pacific War.

"Nagasaki Journey features the archive of Yosuke Yamahata, a Japanese army photographer who documented the immediate aftermath of the atomic explosion at Nagasaki."

chronology documents, reports, images. (Some of the links seem not working any longer.)

『ナガサキ・アーカイブ』: Oral history archiving project features interviews of the victims of a-bomb in Nagasaki. (Only in Japanese)

(In English)