The Kenneth povey Manuscript Collection comprise of three groups of manuscripts:
MS.3.56(2) two fragments of autograph letters to him, one mentions Mr. Harter's retirement. 20th century.
MS.10.55-77 Offprints notes and correspondence, two albums containing offprints of his published work 1926-1964. Three unpublished papers, on Sir Anthony Panizzi, Johann Lomeier and materials of biography, c.1932-33. Folders of correspondence, notes on and proofs of articles and notes on biographical topics, c.1949-63. Two booklets and a leaflet printed on a miniature press designed and contsructed by him, 1948, 1955-1956. 4 boxes date 1926-64
MS.14.1-29 Typescript copies of 29 letters dating from 1960-1965 to D.F. McKenzie, mainly concerning McKenzie's PhD thesis subsequently published as The Cambridge University Press, 1699-1712: a biographical study, see the bibliography for further details.