| Reference | Title | Date | Access status |
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NRAS189
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Sinclair family, baronets, of Ulbster, Caithness-shire
| 1737-20th century |
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NRAS189/1
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Volume I: 'Correspondence of the Rt. Hon. Sir John Sinclair, Bart.'
| 1769-1829 |
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NRAS189/2
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Volume II: 'Correspondence of the Rt. Hon. Sir John Sinclair, Bart.'
| 1737-1836 |
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NRAS189/3
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Volume III: 'Correspondence of the Rt. Hon. Sir John Sinclair, Bart. - Members of Parliament'
| 1786-1841 |
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NRAS189/4
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Volume IV: 'Correspondence of the 'Rt. Hon. Sir John Sinclair, Bt. - Dukes, Marquesses and Earls'
| 1785-1835 |
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NRAS189/5
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Volume V: 'Correspondence of the Rt. Hon. Sir John Sinclair, Bart - Bishops, Barons, Baronets and Knights'
| 18th century-19th century |
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NRAS189/6
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Volume VI: 'Letters - 1. From H.M. King William IV when Duke of Clarence'
| 1818-1837 |
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NRAS189/7
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Volume VII: 'Letters - 11. From the Rt. Hon. J.W. Croker, M.P.'
| 1833-1857 |
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NRAS189/8
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Volume VIII: 'Letters - 111. From Joseph Hume Esq. M.P.'
| 1812-1853 |
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NRAS189/9
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Volume IX: 'Letters from Sir Brooke Boothby, bart'
| 1809-1824 |
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