The complete David Jackman | Organum discography is very extensive and is presented here in two formats:
1: As detailed, illustrated, PDF documents
2: As a basic text-only summary listing
The link below opens a page where you can download the definitive illustrated discography (using scans from David's own personal collection). Because of its size the document has been divided into 10 separate PDF files
Open Download Window

Click the link below to open a simpler, text-only, reference with window-tabs sorting the discography chronologically and by label.
Open Summary Window