| RefNo | Title | Date |
| EC/1932/05 | Fritsch, Felix Eugen: certificate of election to the Royal Society | |
| RR/17/40 | Referee's report by John Bretland Farmer, on a paper 'On the anatomy of the Julianiaceae considered from the systematic point of view' by Felix Eugen Fritsch | [December 1906] |
| RR/17/44 | Referee's report by John Bretland Farmer, on a paper 'On a general consideration of the subaerial and freshwater algal flora of Ceylon' by Felix Eugen Fritsch | [July 1906] |
| NLB/35/245 | Copy letter from Archibald Geikie, to Dr Felix Eugen Fritsch | 3 May 1907 |
| NLB/35/278 | Copy letter from Robert William Frederick Harrison, to Professor Albert Charles Seward, Fellow of the Royal Society, Chairman of the Botany Sectional Committee | 10 May 1907 |
| NLB/35/314 | Copy letter from Robert William Frederick Harrison, to Dr Felix Eugen Fritsch | 14 May 1907 |
| NLB/35/509 | Copy letter from Robert William Frederick Harrison, to Dr Felix Eugen Fritsch | 7 June 1907 |
| RR/17/41 | Referee's report by Isaac Bayley Balfour, on a paper 'On the anatomy of the Julianiaceae considered from the systematic point of view' by Felix Eugen Fritsch | [March 1907] |
| RR/17/45 | Referee's report by Harold William Taylor Wager, on a paper 'On a general consideration of the subaerial and freshwater algal flora of Ceylon' by Felix Eugen Fritsch | [September 1906] |
| RR/45/95 | Referee's report by Felix Eugen Fritsch, on a paper 'The algal sediments of Andros Island, Bahamas' by Maurice Black | [December 1932] |
| RR/65/213 | Referee's report by Felix Eugen Fritsch, on a paper 'The structure of the walls of parenchyma in avena coleoptiles' by Reginald Dawson Preston | 10 March 1938 |
| RR/67/6 | Letter from Felix Eugen Fritsch, on a paper 'The structure of the cell wall in some species of the filamentous green alga Cladophora' by William Thomas Astbury and Reginald Dawson Preston to J D Griffith Davies, Assistant Secretary of the Royal Society | 5 April 1940 |
| RR/72/70 | Referee's report by Felix Eugen Fritsch, on a paper 'Studies in the post-glacial history of British vegetation. XI. Late-glacial deposits in Cornwall' by Ann P Conolly, Harry Godwin, Eleanor M Megaw and R Ross | 1949 |
| RR/71/73 | Referee's report by Felix Eugen Fritsch, on a paper 'Fertilization, including chemotactic phenomena in the Fucaceae' by Alan Hugh Cook, J A Elvidge and Ian Morris Heilbron | [1948] |
| MDA/C/6/1 | Papers relating to an award from the Darwin Research Fund to Charles Sutherland Elton | 1931-1942 |
| RR/17/42 | Referee's report by Dukinfield Henry Scott, on a paper 'On the anatomy of the Julianiaceae considered from the systematic point of view' by Felix Eugen Fritsch | 15 March 1907 |
| RR/17/43 | Referee's report by Frederick Frost Blackman, on a paper 'On a general consideration of the subaerial and freshwater algal flora of Ceylon' by Felix Eugen Fritsch | [July 1906] |
| RR/67/5 | Referee's report by Felix Eugen Fritsch, on a paper 'The structure of the cell wall in some species of the filamentous green alga Cladophora' by William Thomas Astbury and Reginald Dawson Preston | March 1940 |
| RR/68/105 | Referee's report by Felix Eugen Fritsch, on a paper 'The fine structure of collenchyma cells in Heracleum Sphondylium L' by G P Majumdar and Reginald Dawson Preston | [1941] |