| RefNo | Title | Date |
| IM/GA/WS/2242 | Eckersley, Thomas Lydwell | nd |
| RR/43/20 | Referee's report by George Paget Thomson, on a paper 'On the connection between the ray theory of electric waves and dynamics' by Thomas Lydwell Eckersley | March 1931 |
| RR/49/116 | Referee's report by Hector Munro Macdonald, on a paper 'On the magnetic ionic theory of radio transmission' by Thomas Lydwell Eckersley | [March 1933] |
| RR/47/27 | Referee's report by Joseph Larmor, on a paper 'Radio transmission problems treated by phase integral methods' by Thomas Lydwell Eckersley | 26 January 1932 |
| RR/47/29 | Referee's report by William Henry Eccles, on a paper 'Long wave transmission, treated by phase integral methods' by Thomas Lydwell Eckersley | February 1932 |
| RR/61/117 | Referee's report by Edward Victor Appleton, on a paper 'The scattering of wireless waves in the ionosphere' by Thomas Lydwell Eckersley | September 1937 |
| RR/61/115 | Second referee's report by Edward Victor Appleton, on a paper 'Application of the phase integral method to the analysis of the diffraction and refraction of wireless waves round the earth' by Thomas Lydwell Eckersley and G Millington | December 1937 |
| RR/67/109 | Letter from Thomas Lydwell Eckersley, on his paper with F T Farmer 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' to the Secretary of the Royal Society | 3 September 1940 |
| RR/67/108 | Memorandum from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to William Lawrence Bragg | 13 August 1940 |
| EC/1938/05 | Eckersley, Thomas Lydwell: certificate of election to the Royal Society | |
| RR/47/28 | Referee's report by Joseph Larmor, on a paper 'Long wave transmission, treated by phase integral methods' by Thomas Lydwell Eckersley | 4 February 1932 |
| RR/47/30 | Referee's report by Edward Victor Appleton, on a paper 'Musical atmospherics' by Thomas Lydwell Eckersley | April 1932 |
| RR/67/115 | Letter from Alfred Charles Glyn Egerton, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to unknown | 10 December 1940 |
| RR/66/333 | Referee's report by Thomas Lydwell Eckersley, on a paper 'The theory of reflexion of very long wireless waves from the ionosphere' by Maurice Vincent Wilkes | [October 1939] |
| RR/67/142 | List of recipients of a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer and summary of paper | 1941 |
| RR/67/138 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to the Wireless Telegraphy Board and reply | 26 June 1941 |
| RR/67/120 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to Thomas Lydwell Eckersley | 17 January 1941 |
| RR/67/134 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to The Admiralty | 7 April 1941 |
| RR/67/113 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to George Lee, Director of Communications Development at the Ministry of Aircraft Production | 31 October 1940 |
| RR/67/117 | Letter from Thomas Lydwell Eckersley, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to J D Griffith Davies, Assistant Secretary of the Royal Society | 20 December 1940 |
| RR/67/119 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to Edward Victor Appleton | 17 January 1941 |
| RR/67/121 | Letter from H Wooldridge, on behalf of the Department of Scientific and Industrial Research on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to J D Griffith Davies, Assistant Secretary of the Royal Society | 27 January 1941 |
| RR/67/131 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to the Ministry of Supply and reply | 7 April 1941 |
| IM/005633 | Cambridge University Training Corps | nd |
| RR/61/116 | Referee's report by Edward Victor Appleton, on a paper 'Application of the phase integral method to the analysis of the diffraction and refraction of wireless waves round the earth' by Thomas Lydwell Eckersley and G Millington | September 1937 |
| RR/67/139 | Letter from H M Stationery Office, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to J D Griffith, Assistant Secretary of the Royal Society | 12 August 1941 |
| RR/67/137 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to The Admiralty | 26 June 1941 |
| RR/67/140 | Letter from the Post Office Engineering Radio Station, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to J D Griffith Davies, Assistant Secretary of the Royal Society and reply | 21 August 1941 |
| RR/67/136 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to the Department of Scientific and Industrial Research | 26 June 1941 |
| RR/67/112 | Letter on behalf of George Lee, Director of Communications Development at the Ministry of Aircraft Production, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to J D Griffith Davies, Assistant Secretary of the Royal Society | 29 October 1940 |
| RR/67/124 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to H Wooldridge, on behalf of the Department of Scientific and Industrial Research | 4 February 1941 |
| RR/67/129 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to the Meteorological Office and reply | 7 April 1941 |
| RR/67/126 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to G Millington | 11 February 1941 |
| RR/67/128 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to the Astronomer Royal and reply | 7 April 1941 |
| RR/67/116 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to Thomas Lydwell Eckersley | 16 December 1940 |
| RR/67/111 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to George Lee, Director of Communications Development at the Ministry of Aircraft Production | 26 September 1940 |
| RR/67/123 | Letter from H Wooldridge, on behalf of the Department of Scientific and Industrial Research, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to J D Griffith Davies, Assistant Secretary of the Royal Society | 3 February 1941 |
| RR/67/132 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to the General Post Office and reply | 7 April 1941 |
| RR/67/133 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to the Ministry of Aircraft Production and reply | 7 April 1941 |
| RR/67/141 | Letter from the Wireless Telegraphy Board, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to J D Griffith Davies, Assistant Secretary of the Royal Society and reply | 28 August 1941 |
| RR/49/114 | Referee's report by Edward Victor Appleton, on a paper 'On the magnetic ionic theory of radio transmission' by Thomas Lydwell Eckersley | [April 1933] |
| RR/49/115 | Referee's report by Douglas Rayner Hartree, on a paper 'On the magnetic ionic theory of radio transmission' by Thomas Lydwell Eckersley | [May 1933] |
| RR/65/48 | Referee's report by Thomas Lydwell Eckersley, on a paper 'Further investigations of very long waves reflected from the ionosphere' by Kenneth George Budden, John Ashworth Ratcliffe and Maurice Vincent Wilkes | December 1938 |
| RR/67/107 | Letter from Thomas Lydwell Eckersley, on his paper with F T Farmer 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' to the Secretary of the Royal Society | 1940 |
| RR/67/110 | Referee's report by Edward Victor Appleton, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer | September 1940 |
| RR/67/114 | Letter and copy of letter from Alfred Charles Glyn Egerton, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to C S Wright | 12 November 1940 |
| RR/67/118 | Letter from H Wooldridge, on behalf of the Department of Scientific and Industrial Research on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to J D Griffith Davies, Assistant Secretary of the Royal Society | 16 January 1941 |
| RR/67/122 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to H Wooldridge, on behalf of the Department of Scientific and Industrial Research | 29 January 1941 |
| RR/67/125 | Letter from G Millington, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to the Secretary of the Royal Society | 6 February 1941 |
| RR/67/127 | Letter from G Millington, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to J D Griffith Davies, Assistant Secretary of the Royal Society | 2 April 1941 |
| RR/67/130 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to the Wireless Telegraphy Board and reply | 7 April 1941 |
| RR/67/135 | Letter from Cambridge University Press, on a paper 'Short period fluctuations in the characteristics of wireless echoes from the ionosphere' by Thomas Lydwell Eckersley and F T Farmer to J D Griffith Davies, Assistant Secretary of the Royal Society | 25 June 1941 |
| RR/68/157 | Referee's report by Thomas Lydwell Eckersley, on a paper 'Relaxation methods applied to engineering problems VIIA - Biharmonic analysis as applied to the flexure and extension of flat elastic plates' by L Fox and Richard Vynne Southwell | 5 May 1941 |