| RefNo | Title | Date |
| EC/1947/20 | Orowan, Egon: certificate of election to the Royal Society | |
| PB/3/2/4/14/33 | Correspondence with Ergon Orowan on continental drift | 1964 |
| IM/GA/WS/2705 | Orowan, Egon | nd |
| RR/65/208 | Referee's report by Herbert John Gough, on a paper 'Theory of the fatigue of metals' by Egon Orowan | 21 July 1938 |
| RR/65/207 | Referee's report by Cecil Henry Desch, on a paper 'Theory of the fatigue of metals' by Egon Orowan | February 1939 |
| RR/72/13 | Referee's report by Egon Orowan, on a paper 'The specific energy of crystal boundaries in tin' by K T Aust and B Chalmers | 1949 |
| RR/71/103 | Referee's report by Egon Orowan, on a paper 'Dislocations as a cause of mechanical damping in metals' by John Douglas Eshelby | [1948] |
| RR/72/121 | Referee's report by Egon Orowan, on a paper 'One-dimensional dislocations - III. Influence of the second harmonic term in the potential representation, on the properties of the model' by Frederick Charles Frank and J H van der Merwe | 1949 |
| PB/1/33/1/7 | Nobel Prize | 1948 |
| IM/003388 | Orowan, Egon | April 1966 |
| IM/003387 | Orowan, Egon | 1960 |
| JFN/3/29 | Correspondence between John Nye and Egon Orowan | 1950 |
| MS/965/3/1 | Letter from [Egon] Orowan, Budapest XI., Lenke-tér 5., to Edward Neville da Costa Andrade | 6 July 1936 |
| MS/965/3/2 | Letter from [Egon] Orowan, Budapest XI., Lenke-tér 5., to Edward Neville da Costa Andrade | 13 July 1936 |
| MS/965/3/3 | Letter from [Egon] Orowan, Massachusetts Institute of Technology, Department of Mechanical Engineering, Cambridge 39, Mass, USA, to Professor [Edward Neville da Costa] Andrade, F. R. S., Director, The Royal Institution, 21 Albermarle treet, London, W. 1. | 15 June 1950 |
| MS/965/3/4 | Letter from [Egon] Orowan, University of Cambridge, Department of Physics, Cavendish Laboratory, Free School Lane, Cambridge, to Professor [Edward Neville da Costa] Andrade, F. R. S., Director, The Royal Institution, 21 Albermarle treet, London, W. 1. | 10 July 1950 |
| MS/965/3/5 | Letter from Egon Orowan, 63 Cedar Road, Belmont, [Massachusetts], to Professor [Edward Neville da Costa] Andrade | 31 August 1952 |
| MS/965/3/6 | Copy letter from [Edward Neville da Costa] Andrade, to Dr [Egon] Orowan, F. R. S., 63 Cedar Road, Belmont, [Massachusetts], U. S. A | 5 September 1952 |