Proceedings of the Japan Academy - History, database, and trend.

A catalog of 13,591 papers published by the Japan Academy in three phases over a century in the Proceedings of the Imperial Academy (1913-1945), the Proceedings of the Japan Academy (1945-1977), and Proceedings of the Japan Academy, divided in Series A and B (1977-2022), is made available for public access. The catalog contains information about the authors, the title of the paper, published year, volume, issue, start page, end page, the field of sciences, and the academy member who introduced the paper in the monthly academy meeting. This article reports some analyses of the catalog and discusses the trends and background of the academies' publications during the past century.