| Title |
|---|
| Janus: A Summing Up Author: Koestler, Arthur 1983 Picador (Pan Books) |
| Stranger on the Square. Edited and with an Introduction and Epilogue By Harold Harris Author: Koestler, Arthur and Cynthia 1984 Hutchinson & Co. |
| The Lotus and the Robot Author: Koestler, Arthur 1961 The Macmillan Compny |