This book, the third and final volume of the collected works of physicist Leo Szilard, concerns his forceful advocacy of nuclear arms control and world peace. Szilard, who drafted Einstein's famous letter to President Franklin D. Roosevelt and participated in the Manhattan Project, also became one of the earliest advocates of nuclear arms control. The book is organized in seven parts starting with Szilard’s first public advocacy of arms control in 1947 until his death in 1964. Each section has a general introduction and is followed by documents, such as letters and articles, written by Szilard on arms control issues. One section is devoted to Szilard's contacts with Soviet leader Nikita Khrushchev; another details his founding of and work on The Council for a Livable World. The book also contains a comprehensive introduction by Barton Bernstein covering Szilard’s life between 1945 and 1964. It provides excellent primary source material on an important leader in the arms control and world peace movements.