An Imaginary Tale: The Story of [the square root of minus one]
Dr. Euler's Fabulous Formula: Cures Many Mathematical Ills (Princeton Science Library)
The Golden Ratio: The Story of PHI, the World's Most Astonishing Number
A History of Pi
An Imaginary Tale: The Story of √-1 (Princeton Science Library)
The Irrationals: A Story of the Numbers You Can't Count On
Zero: The Biography of a Dangerous Idea
Trigonometric Delights
Journey through Genius: The Great Theorems of Mathematics