The Gesellschaft für Selbstspielende Musikinstrumente e.V. (Society for Self-Playing Musical Instruments) publishes a quarterly journal called Das Mechanische Musikinstrument. Although most of its reports are about barrel organs, music boxes, etc., interesting articles on pianolas can be found from time to time. The journal is sent to members of the society – but individual issues can also be bought separately or as a CD with PDF files. Some of the older issues in particular are very interesting.