The collection donated to the Archive of Opposition by Zdzisław Najder consists of materials dating from the 1960s to the 1990s and it covers the Polish dissent milieus in exile, independent journalism in and abroad, as well as the memoirs about political life. The collection includes also the correspondence between Najder and important figures from the Polish public life: Jan Nowak-Jeziorański, Jerzy Giedroyć or Bronisław Geremek. The collection was digitalized in 2016.