Status Updates From e: the Story of a Number

My undergrad major was math. What baffled me most was the significance of ‘e’, the base for natural logarithms. It had near magical properties but I had no grasp of why. This book is a history of the discovery of the number 2.71828… and the development of the understanding of its place in math. It is written at about the level of an undergrad course but uses history to motivate the discussion.