King’s diary about state affairs from 1901 to 1910. 『Illseong-nok』 was started from 1752 (Year 28 of Yeongjo) as a diary of Jeongjo when he was a crown prince, and was continued down till 1910. This particular book is a record of year 1901 to 1910. Dates are marked in both lunar and solar calendar. It is an edited version with red marks in the writings and is therefore a draft.