| RefNo | Title | Date |
| EC/1858/17 | Bunsen, Robert Wilhelm: certificate of election to the Royal Society | |
| MS/373/1/102 | Testimonial by Robert Wilhelm Bunsen, Heidelberg, supporting Thomas Edward Thorpe | 15 April 1874 |
| MC/6/115 | Letter from R W [Robert Wilhelm] Bunsen to the Royal Society | 27 November 1860 |
| NLB/19/346 | Copy letter from Theodore E James, to Messrs Harrison & Sons | 17 August 1899 |
| RR/4/30 | Referee's report by Edward Frankland, on a paper 'Photo-chemical researches - Part IV' by Robert Wilhelm Bunsen and Henry Enfield Roscoe | 24 October 1859 |
| RR/3/36 | Referee's report by William Allen Miller, on a paper 'Photochemical researches part III' by Robert Wilhelm Bunsen and Henry Enfield Roscoe | 4 July 1857 |
| PT/68/6/4 | Plate, 'Specimen of the graduated stripes as made with the pendulum apparatus' by Henry E [Enfield] Roscoe | December 1862 |
| PT/58/4 | Paper, 'Photochemical researches' by Professor [Robert Wilhelm] Bunsen and H E [Henry Enfield] Roscoe | [1856] |
| PT/58/5 | Paper, 'Photochemical researches. Section II' by Professor [Robert Wilhelm] Bunsen and H E [Henry Enfield] Roscoe | [1856] |
| PT/58/15/3 | Plate, ray of light passing through glass plates by unknown artist | [1857] |
| PT/58/15/2 | Plate, light falling perpendicular to surface of medium by unknown artist | [1857] |
| PT/68/6 | Paper, 'Photochemical researches part V' by Robert [Wilhelm] Bunsen and Henry E [Enfield] Roscoe | [1862] |
| PT/68/6/1 | Manuscript, 'Photochemical researches part V' by Robert [Wilhelm] Bunsen and Henry E [Enfield] Roscoe | [1862] |
| PT/68/6/3 | Plate, chemical action on horizontal surface by sunlight throughout day by unknown artist | [1862] |
| RR/5/36 | Referee's report by William Allen Miller, on a paper 'Photo-chemical researches.—Part V. On the direct measurement of the chemical action of sunlight' by Robert Wilhelm Bunsen and Henry Enfield Roscoe | 28 December 1862 |
| PT/58/15/1 | Manuscript, 'Photochemical researches. 3rd communication' by R [Robert Wilhelm] Bunsen and H E [Henry Enfield] Roscoe | 20 May 1857 |
| PT/75/8/25 | Drawings, photometer by [Friedrich Veith] | [1859] |
| PT/75/8/31 | Graph, dependence of chemical illumination on barometric pressure by unknown artist | [1859] |
| PT/75/8/28 | Graphs, rate of issue of gas and relation of zenith to ordinates by unknown artist | [1859] |
| PT/75/8/33 | Graph, chemical illumination at specific places and times by unknown artist | [1859] |
| PT/75/8/26 | Drawing, photometric arrangement by Fried [Friedrich] Veith | [1859] |
| PT/75/8/29 | Graphs, accuracy of calculated zenith distances and relation of chemical action to sun's zenith distances by unknown artist | [1859] |
| MC/5/375 | Letter from R W [Robert Wilhelm] Bunsen, Heidelberg, to the Royal Society | 2 December 1858 |
| MC/5 | Volume 5 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1851-1858 |
| MC/6 | Volume 6 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1859-1863 |
| RR/3/35 | Referee's report by Edward Frankland, on two papers 'On the photochemical researches, numbers one and two' by Robert Wilhelm Bunsen and Henry Enfield Roscoe and on 'On the hyrdrocarbons in boghead oil' by Greville Williams | 4 May 1857 |
| AP/45/5 | Unpublished paper, 'On spectrum analysis: with a description of a large spectroscope having nine prisms and achromatic telescopes of two feet focal length' by J P [John Peter] Gassiot | 1863 |
| PT/58/15/4 | Plate, apparatus for finding coefficient of extinction for chlorine and hydrogen
by F Veith | [1857] |
| PT/68/6/2 | Plate, photographic apparatus controlling light exposure by unknown artist | [1862] |
| PT/58/15 | Paper, 'Photochemical researches. 3rd communication' by R [Robert Wilhelm] Bunsen and H E [Henry Enfield] Roscoe | 20 May 1857 |
| AP/45/5/1 | Unpublished manuscript, 'On spectrum analysis: with a description of a large spectroscope having nine prisms and achromatic telescopes of two feet focal length' by J P [John Peter] Gassiot | 1863 |
| RR/3/34 | Referee's report by William Allen Miller, on a paper 'On the photochemical researches, numbers one and two' by Robert Wilhelm Bunsen and Henry Enfield Roscoe | 5 February 1857 |
| RR/6/311 | Referee's report by George Gabriel Stokes, on a paper 'Photo-chemical researches.—Part V. On the direct measurement of the chemical action of sunlight' by Robert Wilhelm Bunsen and Henry Enfield Roscoe | 13 January 1863 |
| PT/75/8/27 | Diagrams, graphs of light reflection and apparatus by [Friedrich] Veith | [1859] |
| PT/75/8/30 | Graphs, variation in chemical diffused light and daily changes in chemical luminosity by unknown artist | [1859] |
| PT/75/8/32 | Graph, 'Diagram showing the chemical action effected by the different parts of the solar spectrum' by H E [Henry Enfield] Roscoe | [1859] |
| MC/17 | Volume 17 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1897-1899 |