One of the worlds most coveted high-performance sports cars, the Porsche 911 has undergone numerous mechanical and cosmetic changes, evolving from a sports roadster into the very complex machine it is today. Follow the evolution of Porsches popular 911 as best-selling author/photographer Dennis Adler traces its history and reveals the many changes in its body and engine. Filled with Adlers stunning photographs, plus photos from Porsche's archives, ads, brochures, and technical drawings. Foreword by Hurley Haywood.