| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1980 | 978-0-919186-08-8 | Edmond Privat | The Life Of Zamenhof Inventor Of Esperanto |
| 1981 | 978-0-919186-16-3 | Esperanto, the solution to our language problems: Studies and articles on language problems, the right to communicate, and the international language, (1959-1981) | |
| 1982 | 978-0-919186-18-7 | Rüdiger & Vilma (compilers) Sindona Eichholz | Esperanto in the Modern World: Studies and Articles on Language Problems, the Right to Communicate, and the International Language (1959-1982) |