Simplified Method of Tracing Rays

Simplified Method of Tracing Rays Through Any Optical System of Lenses, Prisms, and Mirrors

Theory of General Relativity and Gravitations; Based on a Course of Lectures Delivered at the Conference on Recent Advances in Physics Held at the University of Toronto, in January 1921

Theory of Relativity

Bell's Mathematical Tables; Together with a Collection of Mathematical Formulae, Definitions, and Theorems

Elements of the Electromagnetic Theory of Light

Report On the Quantum Theory of Spectra