The collection is organized into series based on format. Formats include game card sets (Karuta), trading cards, postcards, photographs and photograph albums, stereocards, lantern slides, a diary, currency and stamps, publications, artwork, and sound recordings. Primary geographic locations documented in the collection include Japan, Manchuria, Taiwan, and other formerly occupied territories of Japan. Common subjects throughout the collection include Japanese patriotic poetry; the 1894 Sino-Japanese War; the Imperial family; religion and religious sites; culture; and children’s games. Subjects are found across all series.