My older books have real photographs on them (e.g., https://leanpub.com/lovinglisp) and newer ones have AI generated covers and some have AI generated figures. Look for books with photos I have taken of nature - those are the old books (exception is Java AI book that is 90% very old material, but has a new AI generated cover).

In the last year I have started vibe coding a lot, but I still take personal ownership of my latest code examples because I set requirements and provide a design, and ask AI coding harnesses to let me run and test the code so I tweak it. Anyway, it still feels like mostly my code and I prefer the new AI + Mark code over what I used to produce.

This has been a strange ride! I learned to program in 1965 and have always loved coding, but it is a weird new world we live in, my friend.