The way of the use of the digital archive varies by a kind and the genre of the contents. By this special feature, people on a design and the administration of the archive and a researcher using the archive positively report the concrete usage of the archive. Users would discover different ways from that people dealing with a design and construction aimed at at first and may utilize it. I can confirm potence of such a digital archive.

Seigakuin High School Library in Tokyo, which established an independent website ahead of other schools, has bee publishing historical materials since its establishment in 1906 (Meiji 39) as digital archives. The initial aim was to convey the spirit of establishment and the history of educational activities to current students, graduates, faculty, and everyone involved in the school as historical heritage. However, the content itself gradually started to resonate and grew into “the medium that connects the future and the past, and the people”. In this article, I review the process and discuss the potential of digital archive in the future.

The classical music of the Ryukyu dynasty or music for religious service is abundant including a folk song in Okinawa Islands and the Amami Islands. Those music is sung for a living and various events or a contest to be carried out flourishingly. Furthermore, such a music-based modern folk song and pop music are brought about in sequence, too. However, singers disappear, and a small village and a folk song born in an island or the modern folk song made in sequence after the war face danger that it is in discontinuance of making, and a record does it, and to pass away. In addition, the way of the performance changes in the same music by the times and a place and a school. I collect these sound sources and keep it systematically on some kind of platforms and want to keep this music culture well by showing it if possible. I have investigated the present conditions and various trials pushed forward and report it and want to think about possibility of the digital archive of the music of southern island in the future.

Passing on the history of the accommodation of Japanese Americans during WWII DENSHO is a non-profit organization based in Seattle, Washington. Since its establishment in 1996, the organization has been conducting activities to pass on the historical fact that Japanese and Japanese Americans in the United States were separated from their homes, isolated and accommodated during the World War II, as digital archives to future generations. . The group's homepage (https://densho.org/) contains a total of over 1700 hours of interview videos in addition to numerous materials such as photos and newspaper articles that convey the state of Japanese people during and after the war. All contents can be viewed free of charge, and can be searched by "theme", "location", "era", etc. This thesis examines the history of DENSHO's establishment, the contents of digital archive materials, and the organization's activities besides the homepage.

This paper describes a method to publish a digital archive of a collection held in a library, and reports a case study from "Japan Modern Textbook Digital Archive" at Library of Education, National Institute of Educational Policy Research. The paper describes a simple method to build category search function in the digital archive on top of OPAC system of the library. We discuss the following issues for a library to publish a digital archive in a persistent and sustainable way: Cataloguing of bibliographic data and inspections for the copyright status at the development phase, cooperating with other systems, linking from and to other systems, considerations for the data and system migration.

The value of the broadcast archives consisting of a huge number of past news and other programs stored at broadcast stations are attracting attention as a video asset. But it is not still very clear how it can be better used for social returns. In this paper, I report the contents, use scenes, and the content-building process of the “NHK Reminiscence Therapy Library” as a successful example, as well as the issues that will be required for future use of the broadcast archive. The finding in this study is that the successful use of archives cannot be accomplished by the owner (NHK) alone, but with the help the perspective of outside experts as well.