- Three Public Lectures on Scientific Subjects, Delivered at the Rice Institute, March 6-8, 1940
- Collected Mathematical Papers, V2
- Dynamical Systems: A Renewal of Mechanism : Centennial of George David Birkhoff
- Transactions of the American Mathematical Society
- Asymptotic Properties of the Solutions of Ordinary Linear Differential Equations Containing a Parameter with Application to Boundary Value and Expansion Problems