Records of the Committee of Both Kingdoms, often known by its meeting place, Derby House, in Cannon Row, Westminster.
The series preserves the day books of the committee (draft and fair, with occasional gaps), Parliamentary order books, and entry books of letters received and sent. The sub-committee on Irish affairs is represented by an order book, an entry book and two warrant (for payment) books.
The papers of the committee have not survived entire, though they appear to be intact for its first year. There is little material postdating the execution of King Charles I.