You might as well torrent/etc the books, no sense with using web middlemen who get takedowns because they don't have the rights either. Direct piracy gives you a better experience than indirect piracy.
(You should also buy real copies if you still can, because they're great.)
Gocomics seems to go after everyone who posts these comic strips on a regular basis.
The C&H sub-reddit stopped posting some time ago. [0]
The only C&H Search out there is not allowed to show the strips and instead redirects to Gocomics. [1]
Here's a blog post by S. Anand detailing some background on the takedown notice he received, although he doesn't mention who sent it. [2]
I feel saddened that the one comic strip that resisted commercialization has to have its fans face this.
But I suppose that's the nature of the web now.
[0]: https://www.reddit.com/r/calvinandhobbes/comments/1m8j09a/th...
[1]: https://michaelyingling.com/random/calvin_and_hobbes/
[2]: https://www.s-anand.net/blog/the-calvin-and-hobbes-search-ta...