The Hungarian Revolution of 1956: Sources at the University of Illinois Library and Beyond: Search Strategies
Prepared for the REEEC conference "New Directions in Scholarship on the 1956 Hungarian Revolution: Memory and Transnational Impact, 60 Years After", U of I, October 21st, 2016
It appears that the University of Illinois is the only library outside of Europe to hold a copy of this contemporaneous tract by the Belgian anarchist Mercier Vega.