| RefNo | Title | Date |
| MS/525/5/2/14 | Letter from George Thomas Beilby, 11 University Gardens, Glasgow, to [Dugald] Clerk | 3 April 1915 |
| MS/525/5/1/5 | Letter from George Thomas Beilby, 11 University Gardens, Glasgow, to Dr [Dugald] Clerk | 3 December 1914 |
| MS/525/5/2/4 | Letter from George Thomas Beilby, 11 University Gardens, Glasgow, to Dugald Clerk | 14 January 1915 |
| RR/28/86 | Referee's report by George Thomas Beilby, on a paper 'Recrystallization and grain-growth in soft metals' by M Cook and Ulick Richardson Evans | 17 December 1923 |
| NLB/26/852 | Copy telegram from Robert William Frederick Harrison to, George Thomas Beilby, 14 University Gardens, Glasgow | [June 1903] |
| NLB/30/231 | Copy letter from Joseph Larmor, to George Thomas Beilby, [Fellow of the Royal Society], 11 University Gardens, Glasgow | February 1905 |
| NLB/30/601 | Copy letter from Robert William Frederick Harrison, to George Thomas Beilby, [Fellow of the Royal Society], 11 University Gardens, Glasgow | 17 April 1905 |
| NLB/54/145 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Messrs Harrison & Sons | 17 February 1917 |
| NLB/42/129 | Copy letter from Robert William Frederick Harrison to George [Thomas] Beilby FRS | 8 April 1910 |
| NLB/32/747 | Copy letter from Robert William Frederick Harrison, to [Messrs Harrison & Sons] | [19 May 1906] |
| NLB/36/797 | Copy letter from Robert William Frederick Harrison, to George Thomas Beilby, Fellow of the Royal Society | 17 December 1907 |
| NLB/66/174 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir George Beilby, FRS | 7 March 1924 |
| NLB/42/111 | Copy letter from Robert William Frederick Harrison to G [George] Beilby FRS | 6 April 1910 |
| NLB/44/70 | Copy letter from Robert William Frederick Harrison to G [George] T [Thomas] Beilby FRS | 1 May 1911 |
| NLB/44/167 | Copy letter from Robert William Frederick Harrison to G [George] T [Thomas] Beilby FRS | 19 May 1911 |
| NLB/44/264 | Copy letter from Robert William Frederick Harrison to G [George] T [Thomas] Beilby FRS | 1 June 1911 |
| NLB/44/436 | Copy letter from Robert William Frederick Harrison to G [George] T [Thomas] Beilby FRS | 10 July 1911 |
| NLB/45/381 | Copy letter from Robert William Frederick Harrison to G [George] T [Thomas] Beilby FRS | 26 February 1912 |
| NLB/51/119 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Dr George Thomas Beilby FRS | 14 December 1914 |
| IM/000319 | Beilby, Sir George Thomas | 1922 |
| NLB/56/783 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir George [Thomas] Beilby, FRS | 23 May 1919 |
| NLB/53/247 | Copy letter from [Robert William Frederick Harrison], Assistant Secretary of the Royal Society; to unknown correspondent | 09 June 1916 |
| NLB/56/203 | Copy letter from William Bate Hardy, Secretary of the Royal Society; to Sir George [Thomas] Beilby, FRS | 16 December 1918 |
| NLB/61/491 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir George [Thomas] Beilby, FRS | 12 July 1921 |
| NLB/59/10 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir George [Thomas] Beilby, FRS | 9 July 1920 |
| RR/17/353 | Referee's report by George Thomas Beilby, on a paper 'Transparent silver and other metallic films' by Thomas Turner | May 1908 |
| NLB/58/846 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir George [Thomas] Beilby, FRS | 24 June 1920 |
| NLB/59/185 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir George [Thomas] Beilby, FRS | 23 July 1920 |
| NLB/57/671 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Messrs Coutts & Co. | 10 January 1920 |
| RR/27/80 | Referee's report by George Thomas Beilby 'On the structure and chemical activity of copper films, and the colour changes accompanying their oxidation' by Cyril Norman Hinshelwood | June 1922 |
| NLB/61/427 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir George [Thomas] Beilby, FRS | 7 July 1921 |
| NLB/57/184 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to RB Asquith Ellis Esq. AM I Mech. E [Associate Member of the Institution of Mechanical Engineers] Hon. Sec. [Honorary Secretary] of the James Watt Centenary | 8 August 1919 |
| NLB/57/673 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to the Manager; the Clydesdale Bank Ltd, 30 Lombard Street, EC | 10 January 1920 |
| NLB/62/19 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir George [Thomas] Beilby, FRS | 15 November 1921 |
| NLB/55/866 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir George Thomas Beilby, FRS | 16 October 1918 |
| NLB/65/31 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir George [Thomas] Beilby, FRS | 16 July 1923 |
| RR/18/140 | Referee's report by George Thomas Beilby, on a paper 'The effect of temperature upon the ductility of zinc' by W B Haines | July 1911 |
| NLB/65/349 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sydney Pitt Esq.; [Clerk to] The Armourers and Brasiers Company, 81 Coleman Street, E.C. | 18 October 1923 |
| NLB/65/450 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir George [Thomas] Beilby, FRS | 2 November 1923 |
| NLB/66/273 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir George Beilby, FRS | 1 April 1924 |
| NLB/67/138 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Richard Threlfall, FRS | 1 November 1924 |
| NLB/65/663 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Geoge [Thomas] Beilby, FRS | 5 December 1923 |
| NLB/65/579 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Members of the Armourers and Brasiers' Company Research Fellowship Committee (Sir [George Thomas] Beilby, Professor [Henry Cort Harold] Carpenter, Dr [Charles Thomas] Heycock, Dr [Walter] Rosenhain, Dr G. N. Pitt, Mr M. H. Young, Mr [Sydney] Pitt) | 23 November 1923 |
| NLB/67/233 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [Henry Cort Harold] Carpenter, FRS | 17 November 1924 |
| NLB/66/197 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir George Beilby, FRS | 13 March 1924 |
| NLB/66/35 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Prof. [Sydney] Chapman, FRS | 12 February 1924 |
| RR/15/301 | Referee's report by James Alfred Ewing, on a paper 'The minute structure of metals and other plastic solids' by George Thomas Beilby | April 1902 |
| NLB/32/2 | Copy letter from Robert William Frederick Harrison, to Professor Joseph Larmor, Secretary, Royal Society | 11 December 1905 |
| NLB/57/868 | Copy letter from unknown correspondent, [Secretary of the Royal Society]; to Dr HH [Sir Henry Hallett] Dale, FRS | 26 February 1920 |
| NLB/56/398 | Copy letter from Dr. Arthur Schuster, Secretary of the Royal Society; to Professor [Percy Faraday] Frankland, FRS | 29 January 1919 |
| NLB/59 | New Letter Book volume 59, copy letters sent from Royal Society administration | 9 July 1920-2 December 1920 |
| EC/1906/02 | Beilby, Sir George Thomas: certificate of election to the Royal Society | |
| NLB/57 | New Letter Book volume 57, copy letters sent from Royal Society administration | 27 June 1919-27 February 1920 |
| RR/15/302 | Referee's report by Francis Henry Neville, on a paper 'The minute structure of metals and other plastic solids' by George Thomas Beilby | May 1902 |
| RR/28/27 | Referee's report by George Thomas Beilby, on a paper 'On the changes in iron and steel at temperatures below 280° C' by Frank Charles Thompson and Edwin Whitehead | 30 October 1922 |
| NLB/23/2/424 | Copy letter sent from Robert William Frederick Harrison, to George [Thomas] Beilby, [Fellow of the Royal Society], 11 University Gardens, Glasgow | 11 January 1904 |
| MC/19/56 | Letter from George [Thomas] Beilby, 11 University Gardens, Glasgow, to [Robert William Frederick] Harrison | 12 January 1904 |
| MC/19 | Volume 19 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1904 |