| Reference number | Title | Date |
| EC/1888/14 | Clarke, Alexander Ross: certificate of election to the Royal Society | |
| MM/12/89 | Memorandum by Colonel AR Clarke on the Standards Office Apparatus | c.1882 |
| MM/12/88 | Report of the Standards Office Committee, signed by G B Airy, AR Clarke and George Gabriel Stokes | c.1882 |
| RR/6/81 | Referee's report by William Hallowes Miller, on a paper 'Abstract of the results of the comparisons of the standards of length of England, France, Belgium, Prussia, Russia, India, Australia, made at the ordnance Survey Office, Southampton' by Henry James and Alexander Ross Clarke | nd [1867] |
| NLB/3/952 | Copy letter from Herbert Rix, to Sir James Cockle, Fellow of the Royal Society | 22 November 1889 |
| MC/25/47 | Letter from [Alexander Ross] Clarke, Strathmore, Reigate, to the [Royal Society] | 30 May 1910 |
| RR/12/401 | Referee's report by Alexander Ross Clarke, on a paper 'India's contribution to geodesy' by James Thomas Walker | 27 May 1895 |
| RR/6/78 | Referee's report by George Biddell Airy, on a paper 'Abstract of the results of the comparisons of the standards of length of England, France, Belgium, Prussia, Russia, India, Australia, made at the ordnance Survey Office, Southampton' by Henry James and Alexander Ross Clarke | 13 February 1867 |
| MC/13/96 | Letter from A R [Alexander Ross] Clarke, Eriboll, Hastings [?], to [Walter] White, [Assistant Secretary of the Royal Society] | 7 October 1884 |
| EC/1862/04 | Clarke, Alexander Ross: certificate of election to the Royal Society | |
| EC/1888/13 | Clarke, Alexander Ross: certificate of election to the Royal Society | |
| IM/Maull/000860 | Clarke, Alexander Ross | nd |
| NLB/69/633 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Simeon Custodio, Esq., Penaranda, Nueva Ecija, Philippine Islands | 5 July 1926 |
| MC/13/97 | Letter from A R [Alexander Ross] Clarke, Eriboll, Hastings [?], to [Walter] White, [Assistant Secretary of the Royal Society] | 8 October 1884 |
| MC/13 | Volume 13 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1884 |
| MS/427/383 | Copy letter from Walter White, Assistant Secretary of the Royal Society; to Col. [Alexander Ross] Clarke | 8 October 1884 |
| RR/8/317 | Referee's report by Alexander Ross Clarke, on a paper 'On gravimeters; with special reference to a torsion gravimeter, designed by the late J. Allan Broun, F. R. S' by John Herschel | 11 February 1881 |
| RR/7/229 | Referee's report by William Hallowes Miller, on a paper 'Results of the comparisons of the standards of length of England, Austria, Spain, United States, Cape of Good Hope, and of a second Russian standard, made at the Ordnance Survey Office, Southampton. With a preface and notes on the Greek and Egyptian measures of length by Sir Henry James' by Alexander Ross Clarke | 25 June 1873 |
| RR/7/230 | Referee's report by George Biddell Airy, on a paper 'Results of the comparisons of the standards of length of England, Austria, Spain, United States, Cape of Good Hope, and of a second Russian standard, made at the Ordnance Survey Office, Southampton. With a preface and notes on the Greek and Egyptian measures of length by Sir Henry James' by Alexander Ross Clarke | 1 July 1873 |
| RR/8/13 | Referee's report by Alexander Ross Clarke, on a paper 'On the influence of geological changes on the earth's axis of rotation' by George Howard Darwin | 4 April 1877 |
| MC/14/267 | Letter from Alexander Ross Clarke, Boldrewood, Redhill, to [Michael Foster] | 21 November 1887 |
| NLB/1/735 | Copy letter from Michael Foster, to Colonel Alexander Ross Clarke | 19 November 1887 |
| MC/14 | Volume 14 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1885-1888 |
| NLB/42/348 | Copy letter from Robert William Frederick Harrison to Colonel A [Alexander] R [Ross] Clarke CB, FRS | 27 May 1910 |