Leather bound omnibus or compilations?

Hey this question might be dumb or a reach…

But what are some great leather bound omnibus or compilations available out there?

I would love like a complete works omnibus of like Isaac Asimov for example.

But I would also totally be interested in a compilation of different authors on some topics like AI, scifi, or futurologists if something like these exist with a running concurrent set of themes.

Do these exist or is it just too niche to expect such an item?

by Hopefulwaters