Paterson discusses the Cambridge Electron Accelerator Laboratory's attempt to build an electron-positron collider and the Stanford Positron-Electron Asymmetric Ring (SPEAR) as well as some points on storage rings in general. This interview was conducted by Elizabeth Paris as part of her dissertation project on the early history of electron colliding beams in the United States. She is working on her doctorate in History and Philosophy of Science at the University of Pittsburgh.