Favorite math, science, engineering books

I started this thread in the imageboard but it died and I think the text board is slower.

Also we need a fucking Wiki for this shit god damn

Ordinary Differential Equations by Tenenbaum and Pollard
The best way to learn differential equations, period. Incredibly cheap, too.

Algebra by Saunders Mac Lane and Garrett Birkhoff
Classic Set Theory by Derek Goldrei
Linear Algebra Done Right by Sheldon Axler