1. D-ro Ludoviko Lazaro Zamenhof Description: Black-and-white postcard with a reproduction of a painted portrait of Ludwik Zamenhof, inventor of Esperanto.
2. D-ro Ludoviko Lazaro Zamenhof Description: Black-and-white photographic postcard of a painted portrait of Ludwik Zamenhof, inventor of Esperanto.
3. L. L. Zamenhof Date: 1964 Description: Black-and-white postcard with an illustrated portrait of Ludwik Zamenhof, inventor of Esperanto. With a postage stamp celebrating the 100th anniversary of his birth, an an additional stamp celebrating the 105th anniversary.
