Each issue has subject index in front. For major events of the year. Mainichi Komyunikeshonzu, 1983-1986.
Special emphasis is on economics and industry, but also includes social conditions, labor, etc.
Collection of articles taken from Japanese newspapers during the early Showa period up to the end of the war. Organized by topic. Useful for getting an overview. Volumes are in chronological order. Covers entire Meiji period.