See 'Complete record of the restoration of the 17th. c. painted frieze in the Upper Reading Room of the Old Bodleian Library, Oxford, 1950-1955 [by] Helen Watson', MS. Eng. d. 3729 and E. Clive Rouse, 'The repair of the painted frieze in the Picture Gallery' The Bodleian Library Record, vol. 3, no. 32 (1951).