* https://www.gramophone.co.uk/features/article/the-complete-b...
* https://www.musicweb-international.com/classrev/2013/Apr13/B...
* https://www.amazon.com/Bach-2000-Johann-Sebastian/dp/B00001I...
A few years later they released a digital copy, with all the music made MP3s on a USB stick, with PDFs of the booklets:
* https://www.theguardian.com/music/2013/apr/17/complete-bach-...
Edit: Somewhat related, is the All of Bach project:
> All of Bach is a project of the Netherlands Bach Society with the aim to perform and record all of Bach's works and share them online with the world for free. With the finest recordings, performed at special locations and with great attention to image and sound. Don't want to miss a recording of All of Bach? Then subscribe to our YouTube channel. If you would like to help us complete All of Bach, please consider a donation.
* https://www.bachvereniging.nl/en/allofbach