| Reference number | Title | Date |
| EC/1855/17 | Plucker, Julius: certificate of election to the Royal Society | |
| RR/3/223 | Letter from Michael Faraday, on a paper 'On the magnetic induction of crystals' by Julius Plücker | 25 July 1857 |
| RR/5/187 | Referee's report by Arthur Cayley, on a paper 'On a new geometry of space' by Julius Plücker | 9 March 1865 |
| RR/5/188 | Referee's report by Henry John Stephen Smith, on a paper 'On a new geometry of space' by Julius Plücker | 28 March 1865 |
| PT/72/1/5 | Plate, 'Spectra secundi ordinis nitrogenii oxygenii phosphoris sulphuris selenii' by unknown artist | [1864] |
| RR/3/224 | Referee's report by George Gabriel Stokes, on a paper 'On the magnetic induction of crystals' by Julius Plücker | 19 December 1857 |
| PT/71/8 | Paper, 'On a new geometry of space' by J [Julius] Plucker | [1864] |
| RR/6/237 | Referee's report by Arthur Cayley, on a paper 'Fundamental views regarding mechanics' by Julius Plücker | 16 June 1866 |
| PT/72/1/4 | Plate, 'Spectra primi ordinis nitrogenii sulphuris carbonis' by Jul Scheuren | [1864] |
| PT/72/1 | Paper, 'On the spectra of ignited gases and vapours with expecial [sic] regard to the different spectra of the same elementary gaseous substance' by Dr J [Julius] Plucker and J W [Johann Wilhelm] Hittorf | [1864] |
| PT/72/1/3 | Plate, 'Spectra primi ordinis nitrogenii sulphuris carbonis' by unknown artist | [1864] |
| PT/72/1/2 | Plate, spectral tubes and spectroscope by [Jul Scheuren] | [1864] |
| PT/72/1/1 | Manuscript, 'On the spectra of ignited gases and vapours with expecial regard to the different spectra of the same elementary gaseous substance' by Dr J [Julius] Plucker and J W [Johann Wilhelm] Hittorf | [1864] |
| PT/75/7/44 | Diagrams, magnetic axes of ellipsoids by [Julius Plucker?] | [1857] |
| PT/75/7/43 | Diagrams, magnetic axes of crystals by [Julius Plucker?] | [1857] |
| PT/75/7/42 | Diagrams, crystals suspended between poles by [Julius Plucker?] | [1857] |
| MC/7/154 | Letter from J J [James Joseph] Sylvester, Woolwich Common, to Dr [William] Sharpey, [Secretary of the Royal Society] | 16 December 1864 |
| MC/7/184 | Letter from J J [James Joseph] Sylvester, Woolwich Common, to Dr [William] Sharpey, [Secretary of the Royal Society] | 22 February 1865 |
| MC/7/386 | Letter from [Albrecht von Bernstorff], Prussian ambassador, Prussian Embassy, to the Secretary of the Royal Society | 12 December 1866 |
| MC/7/373 | Letter from [Julius] Plücker, Bonn, to the Royal Society | 11 November 1866 |
| MC/7 | Volume 7 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1864-1866 |
| MC/8/4 | Letter from [Julius] Plücker, Bonn, to General [Edward] Sabine, President of the Royal Society | 15 January 1867 |
| RR/3/222 | Referee's report by William Thomson, Lord Kelvin on a paper 'On the magnetic induction of crystals' by Julius Plücker | 13 July 1857 |
| RR/5/186 | Referee's report by Thomas Romney Robinson, on a paper 'On the spectra of ignited gases and vapours, with especial regard to the different spectra of the same elementary gaseous substance' by Julius Plücker | 4 April 1864 |
| MC/8 | Volume 8 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1867-1869 |