Most of the books weren't available on lib gen or Anna's Archive. The few I did find were themselves obviously transcripts. Easy tell was they were missing distinctive formatting that I knew existed from reading the dead tree edition. At that point it was easier to make my own. I probably spent an hour searching for eBooks without DRM that weren't transcripts. Do they exist somewhere? Probably, but with a search of unknown length it was a better use of my time to make my own transcripts with what I had on hand.

I was really wanting to make commentary on how chaotic LLMs are even under constrained circumstances. No doubt both system prompts includes language about considering copyrights and trademarks. Probably pretty strong language at that. For whatever reason one LLM didn't "feel" like translating a 1000 year old document but another did not care in the slightest that we were ripping text from new audiobooks.