The fourth issue of the yearbook History of Intellectual Culture (HIC) features a thematic section on the production of knowledge related to the Holocaust. The contributions focus on the circulation of knowledge via letters and other forms of written communication within and among survivor historical commissions after the Second World War with an emphasis on the interplay of gender and other differences. Although more women than men were involved in these efforts, women typically held subordinate roles to men and have largely been invisible in the historiography of these endeavors. This thematic section addresses this lacuna by exploring aspects of the "unseen labor" behind these documentation efforts that remain underexplored and marginalized in studies on the production, circulation, and history of knowledge, as well as of intellectual culture.