This paper examines the origin of a postcard addressed to AKEGARASU Haya (暁烏敏), which was inserted in the “Daitoyochizu Sakuin (大東輿地図索引)” in AKEGARAU BUNKO (暁烏文庫：Collection of books by AKEGARASU HAYA), and the information obtained from it. As a result of the investigation, it was found that this postcard was sent to AKEGARASU Haya on November 29, 1936, from OTANI Shoshin (大谷勝眞), a professor of law and literature at Keijo (京城) Imperial University and a priest of Shinshu sect Otani school. The main purpose of the postcard was for OTANI to inform AEGARASU that the distribution of “Chosenshi (朝鮮史：History of Korea)” by the Society for the Editing of Korean History, as requested by AKEGARASU when he visited Keijo, had been realized. By investigating the background of this postcard, we can obtain information about the Oriental historian OTANI Shoshin, information about the distribution of “Chosenshi”, as well as information about AKEGARASUʼs friendships and his book-collecting process. In this sense, this postcard is a valuable resource that will contribute to these studies
