St. Martin's Press · Weidenfeld & Nicolson
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Living with Koestler: Letters, 1945-51 | 978-0-297-78531-6 (0-297-78531-1) | 1985 |
| Living With Koestler: Mamaine Koestler's Letters, 1945-51 | 978-0-312-49029-4 (0-312-49029-1) | 1985 |