The volumes contain chronological lists of books printed in Cambridge owned by Cambridge University Library or found in other libraries.
MS.Add.8763: 1521-1698; compiled by F.J.H. Jenkinson, c. 1890-1918, and annotated at the front 'F. Jenkinson's MS. with some notes by C. Sayle'. There are occasional cuttings from dealers' lists.
MS.Add.8764: 1699-1900; compiled by C.E. Sayle, c. 1896-1902.