- FondsAdams - Papers of John Couch Adams
- SeriesBox 24-26 - Papers given by Mrs Horne, in 1990, including correspondence, early diaries, correspondence post mortem etc.
- FileBox 25 - Early diaries, papers and newspaper cuttings
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- Item19/3 - "A translation of the inscription on the Adams Memorial" (at Truro).
- Item19/4 - Bookplate with portrait of Adams and inscription "Ex libris Johannis Couch Adams"
- Item20 - Miscellaneous, mostly biographical, notes about J.C. Adams, mostly in EA's hand.
- Item21 - Miscellaneous newspaper cuttings
- Item22/1 - Printed resolutions of meeting held on 20 Feb.1892 to take steps to place memorial to Adams in Westminster Abbey.
- Item22/2 - Printed resolutions of meetings held on 20 Feb. and 9 July 1892 to take steps to place memorial to Adams in Westminster Abbey.
- Item22/3 - Facsimiles of memoranda and calculations relating to new planet (Neptune).