A sweeping intellectual history that will make us rethink postwar politics and culture, When America Was Great profiles the thinkers and writers who crafted a new American liberal tradition in a conservative era -- from historians Arthur Schlesinger, Jr., and C. Vann Woodward, to economist John Kenneth Galbraith and theologian Reinhold Niebuhr.

A compelling tale that will redefine the word "liberal" for a new generation, Mattson retraces the intellectual journey of these towering figures. They served in the Second World War. They opposed communism but also wanted to make...