That link has a big section on their use of AI that ends with:

> Overall, AI played a critical role in many aspects of this project for things I couldn’t do myself but the vast majority of the work was done manually the “old fashioned way” from creating the design and writing the code to restoring each plate and formatting all the text to designing the book and posters. I have no doubt that a lot more could have been done with AI but I still enjoy putting in the elbow grease to create something just the way I want.