(the ones I’ve been collecting from various lists and borrowed from the library for A)

The Man Who Loved Only Numbers:

An Imaginary Tale: The Story of “i” [the square root of minus one]

Dr. Euler’s Fabulous Formula: Cures Many Mathematical Ills

Godel, Escher, Bach: An Eternal Golden Braid

Mathematics for the Nonmathematician

God Created the Integers: The Mathematical Breakthroughs That Changed History

Fermat’s Last Theorem

The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography

To Infinity and Beyond

Prime Obsession: Bernhard Riemann and the Greatest Unsolved Problem in Mathematics

Nick Bostrom’s Superintelligence

Pedro Domingos’s The Master Algorithm.

The Man Who Knew Infinity by Robert Kanigel

The Colossal Book of Mathematics by Martin Gardner
Euclid in the Rainforest by Joseph Mazur

Four Colours Suffice by Robin Wilson

What is Mathematics Really? by Reuben Hersh
Magical Mathematics by Persi Diaconis and Ron Graham

Games of Life by Karl Sigmund

Mathenauts: Tales of Mathematical Wonder edited by Rudy Rucker

The Mathematical Principles of Natural Philosophy by Isaac Newton