The nGbK's knowledge repository Archive Matter emerged from a 2015 project that set itself the task of developing entryways into to the physical archive. This resulted in indexing and linkages that make the dense history of the nGbK accessible. Focus texts on key topics from over four decades trace different approaches to the history of the Kunstverein from 1969 onwards. Each entry also refers to selected, thematically relevant publications and archive documents.
After the working group was dissolved, the Archive Matter was continued institutionally. Texts by various authors regularly create new thematic paths through the exhibition, event, and publication archive. The selection made by the texts is always just one of many possible excerpts from the association's collective knowledge.