:) That's a good one, Devaney was more my era!
We used this textbook by Devaney: https://www.amazon.com/First-Course-Chaotic-Dynamical-System...
Was absolutely fascinated by the class. One of my favorites from undergrad.
I wonder if there's a good sort of "postmortem" on what happened to NLD and Chaos. It seems like everyone said, "Ok, that's a thing and it explains a lot but we can't do anything with it."