Theological Education Underground: 1937-1940: Dietrich Bonhoeffer Works, Volume 15With extensive commentary about their historical context and theological significance, this volume of writings covers a crucial time and an understudied period of Bonhoeffer's life. It begins during the final period of his illegal work in training Confessing Church seminarians and concludes as he begins his activities in the German resistance. Bridging these two periods is his brief journey to the United States in summer 1939, when he pondered and