| RefNo | Title |
| KHINCH/8/A/D/159 | Letter (part only); [?Lord Robert Montagu], Carlton Club, to 7th Earl of Sandwich. |
| KMAN1/A/10/27/116 | Letter from Lord Robert Montagu, to his brother, the Duke of Manchester |
| KHP46/6/1/3 | Conveyance by the Duke of Manchester, Lord Robert Montagu, and Lord Tankerville (Trustees for the Chapel) to Rev. Vesey of St. John's Chapel, in trust to be used for divine worship, as a Chapel of Ease or Church of England School or for any other parochial purposes. |
| KMAN1/A/10/9/12 | Bundle of loose unrelated papers |
| KHINCH/9/C/B/65 | Letter; J.R.G. Graham, Whitehall, to 7th Earl of Sandwich. |
| KMAN1/A/10/26/7 | Letter from Lord Robert Montagu, Claridges [London], to his grandmother, Lady Oliva Sparrow |
| KMAN1/A/10/27/31 | Letter from Lord Robert Montagu, House of Commons, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/107 | Letter from Lord Robert Montagu, to his brother Mandeville, the Duke of Manchester |
| KMAN1/A/10/27/30 | Letter from Lord Robert Montagu, Chillingham [Northumberland], to his brother, the Duke of Manchester |
| KMAN1/A/10/27/35 | Letter from Lord Robert Montagu, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/32 | Letter from Lord Robert Montagu, House of Commons, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/96 | Letter from Lord Robert Montagu, Brampton Park, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/59 | Letter from Lord Robert Montagu, London, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/79 | Letter from Lord Robert Montagu, London, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/84 | Letter from an unknown sender, Holkham [Norfolk], to the Duke of Manchester |
| KMAN1/A/10/27/97 | Letter from Lord Robert Montagu, Brampton Park, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/80 | Letter form Lord Robert Montagu, to his brother Mandeville, the Duke of Manchester |
| KMAN1/A/10/27/81 | Draft letter from the Duke of Manchester, Kimbolton Castle, to his brother, Lord Robert Montagu |
| KMAN1/A/10/27/82 | Letter from Lord Robert Montagu, London, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/98 | Letter from Lord Robert Montagu, Brampton Park, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/104 | Letter from Lord Derby, St James's Square [London] to the Duke of Manchester |
| KMAN1/A/10/27/103 | Letter form Lord Robert Montagu, to his brother Mandeville, the Duke of Manchester |
| KMAN1/A/10/27/37 | Letter from William Hepworth Dixon, Westwood Park, Droitwich [Worcs], to the Duke of Manchester |
| KMAN1/A/10/27/102 | Letter from Lord Derby, St James Square [London], to the Duke of Manchester |
| KMAN1/A/10/27/40 | Copy letter from Lady Olivia Bernard Sparrow, Brampton Park, to her grandson, the Duke of Manchester |
| KMAN1/A/10/27/112 | Draft letter from the Duke of Manchester, Kimbolton Castle, to his brother, Lord Robert Montagu |
| KMAN1/A/10/27/122 | Letter from R. F. Burnett on behalf of Frederick S. Nicholl, Cary Street [London], to the Duke of Manchester |
| KMAN1/A/10/27/117 | Copy letter, unsigned, Kimbolton Castle, to 'R' |
| KMAN1/A/10/27/33 | Extract from a letter from Lord Robert Montagu, House of Commons, to his brother, Duke of Manchester |
| KMAN1/A/10/27/109 | Draft letter from the Duke of Manchester, Kimbolton Castle, to his brother, Lord Robert Montagu |
| KMAN1/A/10/27/39 | Copy letter from Lady Olivia Bernard Sparrow, Brampton Park, to her grandson, the Duke of Manchester |
| KMAN1/A/10/27/20 | Letter from Lord Robert Montagu, Brampton Park, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/74 | Letter from Lord Robert Montagu, London, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/76 | Letter from Lord Robert Montagu, Marine Hotel, Worthing [Sussex], to his brother, the Duke of Manchester |
| KMAN1/A/10/27/87 | Letter from Lord Robert Montagu, to his brother Mandeville, the Duke of Manchester |
| KMAN1/A/10/27/101 | Letter from the Duke of Manchester, to his brother, Lord Robert Montagu |
| KMAN1/A/10/27/88 | Letter from P. Tillard, Stukeley Hall, to the Duke of Manchester |
| KMAN1/A/10/27/110 | Letter from Lord Robert Montagu, Brampton Park, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/108 | Letter from Lord Robert Montagu, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/69 | Letter from Lord Robert Montagu, London, to Louise, Duchess of Manchester |
| KMAN1/A/10/27/72 | Letter from Lord Robert Montagu, London, to Louise, Duchess of Manchester |
| KMAN1/A/10/27/17 | Letter from Lord Robert Montagu, Brampton Park, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/18 | Letter from the Duke of Manchester, Kimbolton Castle, to his brother, Lord Robert Montagu |
| KMAN1/A/10/27/111 | Copy letter from the Duke of Manchester, Kimbolton Castle, to 'Ossulston' Lord Tankerville |
| KMAN1/A/10/27/16 | Extracts from two letters between the Duke of Manchester and his eldest son, Lord Mandeville |
| KMAN1/A/10/27/19 | Letter from Lord Robert Montagu, Brampton Park, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/73 | Letter from the Duke of Manchester, Kimbolton Castle, to his brother, Lord Robert Montagu |
| KMAN1/A/10/27/75 | Letter from the Duke of Manchester, Kimbolton Castle, to his brother, Lord Robert Montagu |
| KMAN1/A/10/27/77 | Letter from Lord Robert Montagu, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/78 | Draft letter from the Duke of Manchester, Kimbolton Castle, to his brother, Lord Robert Montagu |
| KMAN1/A/10/27/83 | Draft letter from the Duke of Manchester, Kimbolton Castle, to his brother, Lord Robert Montagu |
| KMAN1/A/10/27/105 | Letter from Lord Robert Montagu, House of Commons, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/113 | Letter from Lord Tankerville, Chillingham Castle [Northumberland] to the Duke of Manchester |
| KMAN1/A/10/27/114 | Copy letter from the Duke of Manchester, Kimbolton Castle, to 'Ossulston' Lord Tankerville |
| KMAN1/A/10/27/115 | Letter from Lord Robert Montagu, House of Commons, to his brother, the Duke of Manchester |
| KMAN1/A/10/27/152 | Letter from Lord Robert Montagu, House of Commons, to his brother, the Duke of Manchester |
| KMAN1/A/10/29/45 | Letter from Henry Russell, Queens Square [Belfast], to the Duke of Manchester |
| KMAN1/A/10/29/63 | Letter from Lord Robert Montagu, Privy Council Office, to his brother, the Duke of Manchester |
| KMAN1/A/10/29/32 | Letter from Frederick S. Nicholls, Cary Street [London], to the Duke of Manchester |
| KMAN1/A/10/29/46 | Letter from Henry Russell, Queens Square [Belfast], to the Duke of Manchester |
| KMAN1/A/10/29/10 | Letter from Lord Robert Montagu, House of Commons, to his brother, the Duke of Manchester |
| KMAN1/A/10/29/55 | Letter from Henry Russell, Queens Square [Belfast], to J. S. O'Brien, the Duke's Agent |
| KMAN1/A/10/29/52B | Letter from Henry Russell, Queens Square [Belfast], to the Duke of Manchester |
| KMAN1/A/10/29/52A | Letter from Henry Russell, Queens Square [Belfast], to the Duke of Manchester |
| KMAN1/A/10/29/59 | Letter from Lord Robert Montagu, The Athenaeum, to his brother, the Duke of Manchester |
| KMAN1/A/10/29/54 | Letter from J. S. O'Brien, Tandragee, Agent of the Duke's Irish estates, to the Duke of Manchester |
| KMAN1/A/10/29/60 | Letter from Lord Robert Montagu, The Athenaeum, to his brother, the Duke of Manchester |
| KMAN1/A/10/29/62 | Letter from Lord Robert Montagu, Inverness Terrace [London], to his brother, the Duke of Manchester |
| KMAN1/B/70/1/685 | Letter to John Bull, Hartford |
| KMAN1/B/70/1/544 | Letter to Lord Robert Montagu |
| KMAN1/A/10/20/B/6 | Letter from Millicent Duchess of Manchester, Torquay [Devon] to her mother, Lady Olivia Sparrow |
| KMAN1/B/71/1/244 | Letter to Lord Robert Montagu |
| KMAN1/A/12/7/54 | Extract from a letter to Millicent, Duchess of Manchester, from her mother, Lady Olivia Bernard Sparrow |
| KMAN1/A/12/7/71 | Letter to Millicent, Duchess of Manchester, from her son, Viscount Mandeville, House of Commons |
| KMAN1/A/12/7/99 | Letter to the Duke of Manchester, from Lord Roden, London |
| KMAN1/A/12/7/30 | Letter to Henry John Porter, from Millicent, Duchess of Manchester, Pau [France] |
| KMAN1/A/12/7/193 | Draft letter from the Duke of Manchester, to "My dearest Boy" |
| KMAN1/A/12/8/2 | Letter to Millicent, Duchess of Manchester, in Pau [France], from her husband the Duke of Manchester, London |
| KMAN1/A/12/7/142 | Letter to the Duke of Manchester, from his son Viscount Mandeville, Hinchingbrooke |
| KMAN1/A/10/20/A/9 | Two letters to Millicent, Lady Mandeville, from her husband, Lord Mandeville, and Mr. Porter, Tandragee [Co. Armagh] |
| KMAN1/A/10/20/A/4 | Two letters to Millicent, Lady Mandeville, from her husband, Lord Mandeville, and Mr. Porter, Tandragee [Co. Armagh] |
| KMAN1/A/10/14/4/4 | Letter to Viscount Mandeville from Henry John Ker Porter, Sydney [Australia] |
| KMAN1/A/10/27/106 | Draft letter from the Duke of Manchester, Kimbolton Castle, to his brother, Lord Robert Montagu |
| KMAN1/A/10/14/5/12 | Extract from a letter to an unknown recipient, from Lady Olivia Bernard Sparrow |
| KMAN1/A/49/19/4 | Diary of the 7th Duke of Manchester |