The brochure discusses IBM's pioneering research and development in electronic computing machines, specifically the Selective Sequence Electronic Calculator. The brochure discusses in detail electrons and how they work in calculating machines and other electronic applications and introduces the products of IBM's electronic research. Black and white photographs of computers and computer components, some full page, and drawings of vacuum tubes illustrate the discussion. The front and back covers are green; the inside pages are white. The back cover shows the company logo. Text contents include: Electrons at work; Electronics and calculating; Other electronic applications; Products of IBM electronic research.