The world was at war, America precariously poised on the sidelines. But already a second secret war was well underway with the United States very much in the th

Examines the United States- efforts to create and project a strong counterintelligence capability both at home and abroad during the 1930s. Several federal agen

When Hitler was striving for recognition and relevance in the political turmoil of the early Weimar years in Germany he gave little thought to the world on the

An account of a virtually unknown pre-World War II counterespionage operation describes how naturalized German-American agent William G. Sebold became the FBI's

This publication joins two cryptologic history monographs that were published separately in 1989. In part I, the author identifies and presents a thorough accou