| Reference number | Title | Date |
| EC/1926/17 | Jeffery, George Barker: certificate of election to the Royal Society | |
| RR/19/73 | Referee's report by William McFadden Orr, on a paper 'On a form of the solution of Laplace's equation suitable for problems relating to two spheres' by George Barker Jeffery | 10 May 1912 |
| IM/GA/WS/1643 | Jeffery, George Barker | nd |
| RR/27/95 | Referee's report by Horace Lamb, on a paper 'The motion of ellipsoidal particles immersed in a viscous fluid' by George Barker Jeffery | February 1922 |
| RR/19/72 | Detailed referee's report by William McFadden Orr, on a paper 'On a form of the solution of Laplace's equation suitable for problems relating to two spheres' by George Barker Jeffery | [1912] |
| RR/36/70 | Referee's report by George Barker Jeffrey, on a paper 'On Fresnel's convection coefficient in general relativity' by N R Sen | [May 1927] |
| RR/27/96 | Referee's report by John William Nicholson, on a paper 'The rotation of two circular cylinders in a viscous fluid' by George Barker Jeffery | January 1922 |
| RR/35/79 | Referee's report by George Barker Jeffery, on a paper 'The fundamental equation of wave mechancis and the [metrics] of space' by H T Flint and J W Fisher | October 1927 |
| NLB/62/457 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. [George Barker] Jeffery; University College, Gower Street, W.C.l. | 17 February 1922 |
| NLB/62/483 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Dr. [George Barker] Jeffery, FRS; University College, Gower Street, W.C.l. | 21 February 1922 |
| RR/38/130 | Referee's report by George Barker Jeffery, on a paper 'System of line vortices in a channel of finite breadth' by Louis Rosenhead | January 1929 |
| RR/27/97 | Referee's report by Geoffrey Ingram Taylor, on a paper 'The rotation of two circular cylinders in a viscous fluid' by George Barker Jeffery | February 1922 |
| RR/36/60 | Referee's report by George Barker Jeffery, on a paper 'Resistance to a barrier in the shape of an arc of a circle' by Louis Rosenhead and S Brodetsky | [October 1927] |
| NLB/62/633 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Dr. [George Barker] Jeffery, FRS; University College, Gower Street, W.C.l. | 28 March 1922 |
| RR/66/76 | Referee's report by George Barker Jeffery, on a paper 'The masses of the meson and mesotron' by Arthur Stanley Eddington | 1 November 1939 |
| RR/66/75 | Referee's report by George Barker Jeffery, on a paper 'A new derivation of the quadratic equation for the masses of the proton and electron' by Arthur Stanley Eddington | 1 November 1939 |
| NLB/62 | New Letter Book volume 62, copy letters sent from Royal Society administration | 11 November 1921-10 June 1922 |
| RR/66/338 | Referee's report by George Barker Jeffery, on a paper 'The asymptotic expansion of integral functions defined by Taylor series' by Ernest Marshall Wright | [July 1939] |
| RR/67/405 | Letter from George Barker Jeffery, on a paper 'Complex potentials in two-dimensional elasticity. II' by A C Stevenson to the Secretary of the Royal Society | 9 December 1940 |
| RR/69/70 | Referee's report by George Barker Jeffery, on a paper 'Application of quaternions to rotations in hyperbolic space of four dimensions' by Arthur William Conway | 31 March 1947 |
| RR/68/254 | Referee's report by George Barker Jeffery, on a paper 'The summation of infinite harmonic series' by Frederick Soddy | 25 September 1942 |
| RR/69/296 | Referee's report by George Barker Jeffery, on a paper 'The distribution of stress in the neighbourhood of a crack in an elastic solid' by Ian Naismith Sneddon | 11 January 1946 |
| RR/67/434 | Referee's report by George Barker Jeffery, on a paper 'The asymptotic expansion of integral functions defined by Taylor series' by Ernest Marshall Wright | 5 December 1940 |
| NLB/70/587 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [George Barker] Jeffery, FRS | 27 May 1927 |
| NLB/70/616 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [George Barker] Jeffery, FRS | 8 June 1927 |
| NLB/72/26 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [George Barker] Jeffery, FRS | 24 January 1929 |
| IM/GA/WS/3 | Jeffery, George Barker | nd |
| RR/34/132 | Referee's report by George Barker Jeffery, on a paper 'On Hilbert's world-function' by Edmund Taylor Whittaker | [November 1926] |
| RR/66/262 | Referee's report by George Barker Jeffery, on a paper 'The steady two-dimensional radial flow of viscous fluid between two inclined plane walls' by Louis Rosenhead | [April 1940] |
| RR/67/215 | Referee's report by George Barker Jeffery, on a paper 'General bi-harmonic analysis for a plate containing circular holes' by Albert Edward Green | May 1940 |
| RR/42/18 | Referee's report by George Barker Jeffery, on a paper 'The steady broadside motion of an anchor ring in an infinite viscous liquid' by F E Relton | June 1931 |
| RR/67/198 | Memorandum from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Stress systems in aeolotropic plates, III' by Albert Edward Green to George Barker Jeffery | 6 November 1940 |