| Reference number | Title | Date |
| EC/1883/06 | Fitzgerald, George Francis: certificate of election to the Royal Society | |
| NLB/3/206 | Copy letter from Herbert Rix, to Professor George Francis Fitzgerald, Fellow of the Royal Society | 10 April 1889 |
| NLB/12/302 | Copy letter from Herbert Rix, to Professor George Francis Fitzgerald, Fellow of the Royal Society | 27 January 1896 |
| NLB/14/747 | Copy letter from Robert William Frederick Harrison, to Professor George Francis Fitzgerald, Fellow of the Royal Society | 7 May 1897 |
| RR/15/109 | Referee's report by George Francis Fitzgerald, on a paper 'Energy of rontgen & becquerel rays and the energy required to produce an ion in gases' by Professor Ernest Rutherford and R K McClung | 11 July 1900 |
| NLB/14/211 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 22 January 1897 |
| NLB/14/151 | Copy letter from Arthur William Rucker, to Richard Tetley Glazebrook, [Fellow of the Royal Society] | 13 January 1897 |
| NLB/16/125 | Copy letter from Robert William Frederick Harrison, to Professor Fitzgerald, Fellow of the Royal Society | 7 January 1898 |
| NLB/15/48 | Copy letter from Arthur William Rucker, to Francis George Fitzgerald, [Fellow of the Royal Society] | 15 June 1897 |
| NLB/15/43 | Copy letter from Arthur William Rucker, to [George Francis] Fitzgerald, [Fellow of the Royal Society] | 11 June 1907 |
| NLB/15/139 | Copy letter from Arthur William Rucker, to George Francis Fitzgerald, Fellow of the Royal Society | 6 July 1897 |
| NLB/15/205 | Copy letter from Arthur William Rucker, to Professor George Francis Fitzgerald, Secretary Royal Society | 15 July 1897 |
| NLB/15/426 | Copy letter from Robert William Frederick Harrison, to Professor George Francis Fitzgerald, Fellow of the Royal Society | 1 October 1897 |
| NLB/15/492 | Copy letter from Robert William Frederick Harrison, to Professor George Francis Fitzgerald, Fellow of the Royal Society | 13 October 1897 |
| NLB/16/148 | Copy letter from Robert William Frederick Harrison, to R T Glazebrook, [Fellow of the Royal Society] | 10 February 1898 |
| NLB/17/108 | Copy letter from Arthur William Rucker, to Joseph Larmor, [Fellow of the Royal Society] | 18 July 1898 |
| NLB/17/275 | Copy letter from Robert William Frederick Harrison, to Richard Tetley Glazebrook, Fellow of the Royal Society | 29 September 1898 |
| NLB/17/302 | Copy letter from Robert William Frederick Harrison, to Dr Joseph Larmor, Fellow of the Royal Society | 6 October 1898 |
| NLB/19/606 | Copy letter from Arthur William Rucker, to Professor George Francis Fitzgerald, Fellow of the Royal Society | 8 November 1899 |
| NLB/20/703 | Copy letter from Robert William Frederick Harrison, to Professor George Francis Fitzgerald, Fellow of the Royal Society | 19 June 1900 |
| NLB/20/701 | Copy letter from Robert William Frederick Harrison, to Professor Joseph John Thomson, Fellow of the Royal Society | 19 June 1900 |
| NLB/20/676 | Copy letter from Robert William Frederick Harrison, to Professor George Carey Foster, Fellow of the Royal Society | 15 June 1900 |
| NLB/20/743 | Copy letter from Robert William Frederick Harrison, to Professor George Francis Fitzgerald, Fellow of the Royal Society | 28 June 1900 |
| NLB/21/35 | Copy letter from an unknown correspondent, to Professor George Carey Foster, Fellow of the Royal Society | 18 July 1900 |
| NLB/21/3 | Copy letter from Robert William Frederick Harrison, to the Under Secretary of State for Foreign Affairs, Foreign Office,S.W. | 14 July 1900 |
| NLB/21/9 | Copy letter from Robert William Frederick Harrison, to Professor George Francis Fitzgerald, Fellow of the Royal Society, The University of London, South Kensington, S.W. | 16 July 1900 |
| NLB/21/4 | Copy letter from Robert William Frederick Harrison, to Professor Joseph John Thomson, Fellow of the Royal Society | 16 July 1900 |
| NLB/24/695 | Copy letter from Robert William Frederick Harrison, to Messrs Hollinger & Company, New York | 20 June 1902 |
| RR/13/209 | Referee's report by George Francis Fitzgerald, on a paper 'On the theory of the magneto-optic phenomena of iron, nickel, and cobalt' by J G Leathem | 10 July 1897 |
| RR/11/186 | Referee's report by George Francis Fitzgerald, on a paper 'On the mathematical theory of electromagnetism' by Alex McAuley | 25 February 1892 |
| RR/13/112 | Referee's report by George Francis Fitzgerald, on a paper 'Problems in electric convection' by George Frederick Charles Searle | 31 March 1896 |
| RR/11/9 | Referee's report by George Francis Fitzgerald, on a paper 'On the reflection and refraction of light at the surface of a magnetized medium' by Alfred Barnard Basset | 11 March 1891 |
| RR/12/162 | Referee's report by George Francis Fitzgerald, on a paper 'A dynamical theory of the electric and luminiferous medium' by Joseph Larmor | 19 April 1894 |
| RR/12/290 | Referee's report by George Francis Fitzgerald, on a paper 'On the ratio of the specific heats of some compound gases' by J W Capstick | 27 March 1895 |
| RR/14/194 | Referee's report by George Francis Fitzgerald, on a paper 'Electrical conductivity in gases traversed by cathode rays' by John Cunningham McLennan | 7 February 1900 |
| RR/14/86 | Referee's report by George Francis Fitzgerald, on a paper 'An experiment in search of a directive action of one quartz crystal on another' by John Henry Poynting and P L Gray | 24 October 1898 |
| RR/14/217 | Referee's report by George Francis Fitzgerald, on a paper 'On the vibrations in the field round a theoretical hertzian oscillator' by Karl Pearson and Alice Lee | 11 February 1899 |
| RR/15/119 | Referee's report by George Francis Fitzgerald, on a paper 'The diffusion of ions produced in air by the action of a radio-active substance, ultra-violet light & point discharges' by John Sealy Edward Townsend | 30 June 1900 |
| MM/17/48 | Letter from Heinrich Hertz to Fitzgerald | 11 June 1888 |
| NLB/17/369 | Copy letter from Robert William Frederick Harrison, to Professor George Francis Fitzgerald, Fellow of the Royal Society | 19 October 1898 |
| NLB/20/694 | Copy letter from Robert William Frederick Harrison, to the Under Secretary of State for Foreign Affairs | 19 June 1900 |
| RR/12/284 | Referee's report by George Francis Fitzgerald, on a paper 'On the applications of the kinetic theory to dense gases' by Samuel Hawksley Burbury | 1 June 1895 |
| RR/10/76 | Referee's report by George Francis Fitzgerald, on a paper 'On evaporation and dissociation. Part V. A study of the thermal properties of methyl-alcohol' by William Ramsay and Sydney Young | 26 March 1887 |
| RR/11/12 | Third letter from George Francis Fitzgerald, on a paper 'On the reflection and refraction of light at the surface of a magnetized medium' by Alfred Barnard Basset to John William Strutt, Lord Rayleigh, Secretary of the Royal Society | 22 June 1891 |
| RR/12/161 | Letter from George Francis Fitzgerald, to John William Strutt, Lord Rayleigh, regarding a paper 'A dynamical theory of the electric and luminiferous medium' by Joseph Larmor | 9 February 1894 |
| RR/14/42 | Referee's report by George Francis Fitzgerald, on a paper 'An extension of Maxwell's electro-magnetic theory of light to include dispersion, metallic reflection, and allied phenomena' by Edwin Edser | 17 March 1898 |
| PP/9/6 | Paper, 'On the specific heats of minerals' by John Joly | 1886 |
| PP/9/12 | Paper, 'On the method of condensation in calorimetry' by John Joly | 1886 |
| PP/9/12/1 | Manuscript, 'On the method of condensation in calorimetry' by John Joly | 1886 |
| PP/10/28 | Paper, 'Clausius's formula for the change of state from liquid to gas applied to Messrs. Ramsay and Young's observations on alcohol' by George Francis Fitzgerald | 1887 |
| PP/10/8 | Paper, 'On the thermodynamic properties of substances whose intrinsic equation is a linear function of the pressure and temperature' by George Francis Fitzgerald | 1887 |
| PP/15/8 | Paper, 'Observations on the spark discharge' by John Joly | 1889 |
| PP/15/8/1 | Manuscript, 'Observations on the spark discharge' by John Joly | 1889 |
| RR/10/307 | Referee's report by George Francis Fitzgerald, on a paper 'On the magnetic action of displacement-currents in a dielectric' by Silvanus Phillips Thompson | 28 March 1889 |
| RR/11/10 | Letter from George Francis Fitzgerald, on a paper 'On the reflection and refraction of light at the surface of a magnetized medium' by Alfred Barnard Basset to John William Strutt, Lord Rayleigh, Secretary of the Royal Society | 12 March 1891 |
| RR/11/11 | Second letter from George Francis Fitzgerald, on a paper 'On the reflection and refraction of light at the surface of a magnetized medium' by Alfred Barnard Basset to John William Strutt, Lord Rayleigh, Secretary of the Royal Society | 16 March 1891 |
| RR/12/308 | Referee's report by George Francis Fitzgerald, on a paper 'On the ascent of sap' by Henry Horatio Dixon and John Joly | 17 November 1894 |
| RR/12/395 | Referee's report by Thomas Edward Thorpe, on four papers 'Argon, a new constituent of the atmosphere' by John William Strutt, 3rd Baron Rayleigh and William Ramsay, 'The liquefaction and solidification of argon' by K Olszewski, 'On the spectra of argon' by William Crookes, 'On the spark spectrum of argon as it appears in the spark spectrum of air' by Walter Noel Hartley, and a letter from George Francis Fitzgerald to John William Strutt, 3rd Baron Rayleigh | 13 February 1895 |
| RR/12/396 | Referee's report by John Henry Poynting, on four papers 'Argon, a new constituent of the atmosphere' by John William Strutt, 3rd Baron Rayleigh and William Ramsay, 'The liquefaction and solidification of argon' by K Olszewski, 'On the spectra of argon' by William Crookes, 'On the spark spectrum of argon as it appears in the spark spectrum of air' by Walter Noel Hartley, and a letter from George Francis Fitzgerald to John William Strutt, Lord Rayleigh | 18 February 1895 |
| PP/22/3 | Paper, 'On the motion under gravity of fluid bubbles through vertical columns of liquid of a different density' by Frederick Thomas Trouton | 1893 |
| PP/15/17 | Paper, 'On the steam calorimeter' by J [John] Joly | 1889 |
| PP/15/17/1 | Manuscript, 'On the steam calorimeter' by J [John] Joly | 1889 |
| NLB/19/564 | Copy letter from Robert William Frederick Harrison, to Sir Fleetwood Isham Edwards | 2 November 1899 |
| NLB/19/602 | Copy letter from Robert William Frederick Harrison, to Sir Fleetwood Isham Edwards | 8 November 1899 |
| MC/17 | Volume 17 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1897-1899 |
| MC/25/165 | Letter from Maunsell, Darley & Orpen, 18 Stephen's Green North, Dublin, to The Secretary, Royal Society, Burlington House, London, W | 26 July 1910 |