Manfred Bonson worked as a music journalist for WDR, SWR and NDR. The focus of the collection as well as the journalistic activities are the genres of folk and singer-songwriter, with a special focus on music from Germany and Europe. In addition to LPs and audio cassettes, tape recordings of pieces played in Bonson's radio broadcasts are also available. Furthermore, there is a selection of broadcast recordings as well as recordings that the collector made privately at concerts and other performances. The collection is currently moving to the CWM and is not yet available.