Relying on a biographical approach that reconstructs the life and work of Johannes [Hovhanness/Յովհաննէս] Jakob [Hagop/Յակոբ] Manissadjian [Manisacıyan/Մանիսաճեան] (1862–1942), a highly successful scientist at the Anatolia College (Merzifon/Marsovan/Մարզվան), who established a meteorological station and a natural history museum with an extensive collection of specimens, the paper traces the routes of disappearance, dispersal and ruination of indigenous lives, people, and knowledge within the context of the Armenian genocide. Drawing on documents from Ottoman, German, and American archives, I stress the potential of biographical methods to study the processes and structures of mass violence targeting the Ottoman Armenians, as well as to foreground the agency and subjectivity of genocide survivors. The article also focuses on post-genocide scientific (dis)engagements of Manissadjian in light of Theodor W. Adorno’s ‘after Auschwitz’ discussions and from the perspective of indigenous knowledge production. In particular, his two ‘archival acts’ in the post-genocide context, the ‘Catalogue’ of the collection of the Anatolia College Museum that he prepared as ‘the former Curator’ and his small pamphlet entitled Proverbs of Turkey, which provided an ethnographic portrait of Anatolia, were his humble acts of saving a treasure trove of knowledge that was in danger of becoming debris.
