| Reference number | Title | Date |
| EC/1919/04 | Arden-Close, Sir Charles Frederick: certificate of election to the Royal Society | |
| IM/000895 | Close, Sir Charles Frederick, later Arden-Close | nd |
| IM/000894 | Close, Sir Charles Frederick, later Arden-Close | 1922 |
| NLB/63/159 | Copy letter from unknown correspondent; to Sir Charles Close, FRS | 07 July 1922 |
| NLB/56/817 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir Charles [Frederick Arden] Close, FRS | 30 May 1919 |
| NLB/56/834 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir Charles [Frederick Arden] Close, FRS | 6 June 1919 |
| NLB/69/24 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Charles Close, FRS | 14 December 1925 |
| NLB/57/709 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to unknown correspondent | 22 January 1920 |
| NLB/57/318 | Copy letter from Sir Arthur Schuster, Secretary of the Royal Society; to Sir Charles [Frederick Arden-Close] Close, FRS; 25 Winn load, Southampton | 14 October 1919 |
| NLB/64/199 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Frederick Arden] Close, FRS | 22 February 1923 |
| NLB/61/905 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Frederick Arden] Close, FRS | 10 November 1921 |
| NLB/61/571 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Charles [Frederick Arden] Close, FRS | 8 August 1921 |
| NLB/61/224 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Frederick Arden] Close, FRS | 2 June 1921 |
| NLB/57/306 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr [Sir Arthur] Schuster, Secretary of the Royal Society | 11 October 1919 |
| NLB/61/596 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Charles [Frederick Arden] Close, FRS | 15 September 1921 |
| NLB/64/84 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Frederick Arden] Close, Chairman of the National Committee for Geography and FRS | 30 January 1923 |
| NLB/63/43 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Sir Charles [Frederick Arden-] Close, FRS | 16 June 1922 |
| NLB/62/769 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Frederick Arden] Close, FRS | 4 May 1922 |
| NLB/63/74 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Sir Charles Close, FRS | 20 June 1922 |
| NLB/64/21 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Arden Frederick] Close, FRS | 19 January 1923 |
| NLB/64/128 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Frederick Arden] Close, FRS | 5 February 1923 |
| NLB/64/361 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Frederick Arden] Close, FRS | 22 March 1923 |
| NLB/64/668 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Frederick Arden-]Close, K.B.E, FRS | 29 May 1923 |
| NLB/67/479 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Arden] Close, FRS | 7 January 1925 |
| NLB/65/906 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir [Charles Frederick Arden] Close, FRS | 26 January 1924 |
| NLB/67/285 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Arden] Close, FRS | 1 December 1924 |
| NLB/68/284 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Charles [Arden] Close, FRS | 12 June 1925 |
| NLB/68/433 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Charles [Arden] Close, FRS; International Geographical Union, Winchester | 11 July 1925 |
| NLB/69/553 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. [George Thurland] Prior, FRS | 7 June 1926 |
| NLB/68/504 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Charles [Arden] Close, FRS, Chairman of the National Committee for Geography | 20 July 1925 |
| NLB/57/221 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir Charles [Frederick] Close [Arden-Close], FRS, RE; Ordnance Survey Office, Southampton | [?] September 1919 |
| RR/65/106 | Referee's report by Charles Frederick Arden-Close, on a paper 'Some experimental observations for longitude made by theodolite fitted with a shutter eyepiece' by James De Graaff-Hunter | 9 March 1938 |
| NLB/64 | New Letter Book volume 64, copy letters sent from Royal Society administration | 19 January 1923-11 July 1923 |
| NLB/57 | New Letter Book volume 57, copy letters sent from Royal Society administration | 27 June 1919-27 February 1920 |