The collection is important proof of the activities of a left-thinking historian, a "spiritual father" and co-founder of the Committee for the Defence of the Unjustly Prosecuted (VONS), a co-publisher of unofficial periodic Dialogy, who was imprisoned several times and forced to go to exile, where he collaborated with dissidents from other socialist countries. In 2012 the first part of the collection was donated to the Moravian Museum.