Radar: A Reluctant Miracle by Colonel John B. Mckinney, U. S. Army

The present case history consists of nine chapters entitled: Introduction; The Fathers of Radar; What is Radar; The Long Prelude (1873-1922) - Phase I of the Invention of Radar; The Rise of Radio (1922-1930) - Phase II of the Invention of Radar; The Arrival of Radar (1930-1935) - Phase III of the Invention of Radar; The Race with Destiny (1935-1939) - Phase IV of the Invention of Radar; Radar Becomes Operational (1939-1942) - Phase V of the Invention of Radar; Obstacles and Roadblocks: A Summary. An epilogue and a chronology of the development of radar are also given