I own The Zen of Seeing by Frederick Franck from those years, and I thought he also wrote a book about dying with black and white ink and watercolor illustrations in the early 1980s. However, I don’t think he was the author, though the book I am recalling had a similar look. I gave it to my landlady whose husband was dying, and she found it very comforting. I have a couple of friends now in similar circumstances and I would love to track down a copy. I think the word “Zen” was in the title, but I am not sure. I don’t think it’s the one with the spiral on the cover and the title that I see on Amazon. Do you know what book this might be?