This paper examines the bibliography of the three versions of the Nichiyo shingishō 日用清規抄（The Records of Lectures by Shōun Seisan 笑雲清三） and clarifies the characteristics and relationships among them. These three books are, respectively, a manuscript in the Jingu Bunko 神宮文庫, a manuscript in the Imazu Bunko 今津文庫 of the Hanazono University Library, and a published book from the Edo period. The manuscript in the Jingu Bunko is the oldest, and was recorded by a participant in Seisan’s lecture on the Nichiyo shingi. The Imazu Bunko collection is a record of lectures given by a monk named Tanpaku Kōryō 淡泊光凉, who referred to the record of Seisan’s lectures. The Edo version is said to be the lecture transcripts of a monk named Betsuzan 別山, but the contents were published as a reorganized version of the Imazu Bunko version, and there are few differences in substance between it and the Imazu Bunko version.
