| Number № | Title | Authors | Date |
|---|---|---|---|
| R1 | A Dictionary of Science | E. B. Uvarov | 1944 |
| R2 | A Dictionary of Geography | W. G. Moore | 1958 |
| R3 | A Dictionary of Biology | M. Abercrombie, C. J. Hickman and M. L. Johnson | 1951 |
| R4 | A Dictionary of Music | R. Illing | 1950 |
| HR13 | The Penguin Dictionary of Architecture | John Fleming, Hugh Honour, Nikolaus Pevsner | 1967 |
| R19 | A Dictionary of Electronics | S. Handel | 1962 |