I met James Lister at Cordefactum 2017 in Belgium but I know him better as moderator and helpful guru on the Delcamp Forum and instructor at the prestigious Newark College guitar-making programme. He was also very active in the Leonardo Guitar Research Project. When I heard that he had published a repair guide I was sure it would be well-written and very useful for guitarists and repair people. It took some time to find a Spanish vendor but Madera Guitarras now has it and my copy arrived a few days ago. It looks great but I have yet to dig into it. This article in its original location is full of links so check it out there.