| RefNo | Title | Date |
| EC/1887/03 | Buchanan, John Young: certificate of election to the Royal Society | |
| NLB/2/653 | Copy letter from Herbert Rix, to John Young Buchanan, Fellow of the Royal Society | 4 October 1888 |
| NLB/9/457 | Copy letter from Herbert Rix, to Lord Rayleigh [John William Strutt], Secretary, Royal Society, Terling Place, Witham, Essex | 21 May 1894 |
| NLB/9/561 | Copy letter from Herbert Rix, to John Young Buchanan, Fellow of the Royal Society, 36 Upper Brook Street, W. | 4 June 1894 |
| NLB/15/886 | Copy letter from Robert William Frederick Harrison, to Lady Buchanan | 10 January 1898 |
| RR/16/151 | Referee's report by Charles Vernon Boys, on a paper 'On the compressibility of solids' by John Young Buchanan | 9 March 1904 |
| NLB/16/425 | Copy letter from Michael Foster, to J Y Buchanan | 1 April 1898 |
| NLB/19/92 | Copy letter from Michael Foster, to the President of the Royal Geographical Society, [Sir Clements Robert Markham] | 16 June 1899 |
| NLB/18/337 | Copy letter from Robert William Frederick Harrison, to Professor William Ramsay, Fellow of the Royal Society | 24 February 1899 |
| NLB/19/820 | Copy letter from Theodore E James, to Messrs Harrison & Sons | 3 January 1900 |
| NLB/20/552 | Copy letter from Robert William Frederick Harrison, to Dr W J Blanford, Fellow of the Royal Society | 21 May 1900 |
| NLB/20/610 | Copy letter from Theodore E James, to Messrs Harrison & Sons | [31 May 1900] |
| NLB/23/2/68 | Copy letter from Sir Michael Foster, to The Earl of Rosse [Laurence Parsons], Fellow of the Royal Society and John Young Buchanan, Fellow of the Royal Society | 14 May 1901 |
| NLB/23/2/329 | Copy letter sent from Sir Michael Foster, to John Young Buchanan, Fellow of the Royal Society | 12 May 1903 |
| NLB/23/2/472 | Copy letter from Joseph Larmor, to John Young Buchanan, Fellow of the Royal Society | 5 May 1904 |
| NLB/28/450 | Copy letter from Robert William Frederick Harrison, to Charles Vernon Boys, Fellow of the Royal Society | 9 March 1904 |
| NLB/28/528 | Copy letter from Joseph Larmor, to John Young Buchanan, Fellow of the Royal Society | 23 March 1904 |
| NLB/32/50 | Copy letter from Robert William Frederick Harrison, to Messrs Harrison & Sons | 18 December 1905 |
| NLB/38/84 | Copy letter from Robert William Frederick Harrison, to John Young Buchanan, Fellow of the Royal Society | 15 June 1908 |
| NLB/37/641 | Copy letter from Robert William Frederick Harrison to Sir William Crookes, Fellow of the Royal Society | 23 April 1908 |
| NLB/37/749 | Copy letter from Robert William Frederick Harrison to J [John] Y [Young] Buchanan, Fellow of the Royal Society | 8 May 1908 |
| NLB/42/49 | Copy letter from Archibald Geikie, President RS [President of the Royal Society] to His Most Serene Higness, Albert I, Prince of Monaco | March 1910 |
| NLB/43/630 | Copy letter from Joseph Larmor, to John Young Buchanan, Fellow of the Royal Society | 28 February 1911 |
| MC/10/178 | Letter from J Y [John Young] Buchanan, HMS 'Challenger', Hong Kong, to Professor [Thomas Henry] Huxley, Secretary of the Royal Society | 16 December 1874 |
| NLB/54/393 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to [John Young] Buchanan, FRS | 2 May 1917 |
| NLB/54/421 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to [John Young] Buchanan Esquire, FRS | 10 May 1917 |
| NLB/54/559 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Francis C. Buchanan Esquire; Clarinish, Row, Dumbartonshire | 18 June 1917 |
| NLB/59/685 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to [John Young] Buchanan Esquire, FRS | 3 November 1920 |
| NLB/68/852 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Arthur Shipley, GBE, FRS | 13 November 1925 |
| PP/11/21/3 | Diagram, 'Diagram showing the path described in 24 hours by a particle under the influence of the tidal and constant currents of figure 1' by John Young Buchanan | 1884 |
| RR/15/31 | Referee's report by John Young Buchanan, on a paper 'The circulation of the surface waters of the North Atlantic ocean' by H N Dickson, | 28 May 1900 |
| NLB/67/109 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to A. Macphail Esq.; Ministry of Health, Whitehall, S.W.1 | 27 October 1924 |
| NLB/68/957 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Arthur Shipley, FRS | 9 December 1925 |
| NLB/68/761 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to H. R. Milne [Mill?] Esq. | 30 October 1925 |
| NLB/33/659 | Copy letter from Robert William Frederick Harrison, to John Young Buchanan, Fellow of the Royal Society | 16 October 1906 |
| MC/11/12 | Letter from J Y [John Young] Buchanan, 10 Moray Place, Edinburgh, to Walter White, [Assistant Secretary of the Royal Society], Burlington House | 30 January 1877 |
| MC/10/402 | Letter from J Y [John Young] Buchanan, London, to Professor [George Gabriel] Stokes, Secretary of the Royal Society | 4 June 1876 |
| MC/10 | Volume 10 of miscellaneous correspondence regarding business matters, sent to the Royal Society | July 1873-1876 |
| MC/11/15 | Letter from C [Charles] Wyville Thomson, 20 Palmerston Place, Edinburgh, to [John Young] Buchanan | 3 February 1877 |
| MC/11/14 | Letter from J Y [John Young] Buchanan, 10 Moray Place, Edinburgh, to Walter White, [Assistant Secretary of the Royal Society], Burlington House | 30 January 1877 |
| MC/11 | Volume 11 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1877-1879 |
| PP/11/21 | Paper, 'On tidal currents in the ocean' by John Young Buchanan | 1884-1888 |
| PP/11/21/1 | Manuscript, 'On tidal currents in the ocean' by John Young Buchanan | 1884-1888 |
| PP/11/21/2 | Diagram, 'Diagram showing the resultant currents due to the composition of a constant current OP with a tidal current OT, OT' by John Young Buchanan | 1884 |
| PP/24/9 | Paper, 'On rapid variations of atmospheric temperature, especially during Föhn, and the methods of observing them' by John Young Buchanan | 1894 |
| NLB/14/670 | Copy letter from Robert William Frederick Harrison, to John Young Buchanan, Fellow of the Royal Society | 27 April 1897 |
| MC/19/146 | Letter from [John Young] Buchanan, 26 Norfolk Street, Park Lane, to the Secretaries of the Royal Society | 10 February 1904 |
| MC/19/147 | Letter from [John Young] Buchanan, 26 Norfolk Street, Park Lane, to Professor [Joseph] Larmor | 16 February 1904 |
| MC/19/148 | Letter from [John Young] Buchanan, to Professor [Joseph] Larmor, Secretary of the Royal Society | 19 March 1904 |
| MC/19/149 | Postcard from [John Young] Buchanan, Monte Carlo, Monaco, to the Assistant Secretary of the Royal Society | 9 April 1904 |
| MC/17 | Volume 17 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1897-1899 |
| NLB/47/197 | Copy letter from Robert William Frederick Harrison to J [John] Y [Young] Buchanan FRS | 13 December 1912 |
| MC/19 | Volume 19 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1904 |