William Dunham's books

I have started reading “The Mathematical Universe” by William Dunham”. Dunham is a very lively writer and a great expositor. So far I have read two other books by him. One is “The Calculus Gallery” and other is “Euler: The master of us all”. Both should be read by anyone with a passing interest in Analysis and Combinatorics. I will have more to say about this one, when I am finished.