- FondsCrook - Papers of John Anthony Crook
- SeriesD - Correspondence
- SubseriesD1 - Files of letters mostly to, with some from JAC, arranged alphabetically by sender/recipient
- File5 - Box 5, Letters P,Q,R
- 90 more...
- Item91 - TLS from S. Rukalski, PO Box 977, Ottawa, Canada
- Item92 - TLS from S. Rukalski, PO Box 977, Ottawa, Canada
- Item93 - TLS from S. Rukalski, PO Box 977, Ottawa, Canada
- Item94 - TLS from S. Rukalski, PO Box 977, Ottawa, Canada
- Item95 - ALS from Mark Russell, Sidney Sussex College
- Item96 - ALS from John Rutter, Old Lacey's, St John's Street, Duxford, Cambridge.
- Item97 - ALS from John Rutter, Old Lacey's, St John's Street, Duxford, Cambridge.
- Item98 - ALS from John Rutter, Old Lacey's, St John's Street, Duxford, Cambridge.
- Item99 - ALS from Magnus Ryan, The Warburg Institute, London.