1. Theory and Application of Infinite Series (Hafner, New York, 1947).
2. Divergent Series (Oxford U.P., Oxford, 1956).
3. Mathematical Thought from Ancient to Modern Times (Oxford U.P., Oxford, 1972).
4. Large orders and summability of eigenvalue perturbation theory: A mathematical overview
5. and Advanced Mathematical Methods for Scientists and Engineers (McGraw-Hill, New York, 1978).