The Ludwik Zamenhof Centre entitled Bialystok of Young Zamenhof is the main tool for promotion of the work and the person of Ludwik Zamenhof. This multimedia exhibition based on listening, video, and photographic materials provides the recipients with an attractive way to explore the past. Not only is it a presentation of historical materials, but also an attempt to recreate the atmosphere of the times when young L. Zamenhof was strolling along the streets. The permanent exhibition is used as a substantial basis for numerous scripts of educational classes for children and teenagers. Esperanto – Libraro was opened on May 12, 2010 in the
Ludwik Hass to his education. He was released in 1948 and remained in the Soviet Union until he returned to Poland in 1957. On his arrival in Warsaw he astounded a welcoming delegation of students, by announcing that he was a revolutionary who wanted to overthrow the bureaucracy. He then sang "The Internationale" and gave a clenched fist salute. Ludwik Hass Ludwik Hass (1918–2008) was a Polish historian who specialised in the history of Freemasonry in Poland. Hass was born to Jewish parents in Stanisławow. He was brought up in a middle-class family which had been assimilated to polish nationalism. He attended