- FondsCrook - Papers of John Anthony Crook
- SeriesD - Correspondence
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- SubseriesD2 - Letters and postcards to JAC, arranged alphabetically by sender
- SubseriesD3 - Files of correspondence between JAC, his pupils and others
- SubseriesD4 - Letters from JAC recommended pupils and colleagues for academic posts, grants etc., together with other related correspondence
- SubseriesD5 - PhD/dissertation reports written by JAC, with related correspondence
- SubseriesD6 - Correspondence relating to the Cambridge Ancient History vols IX and X