About Peter Hoffmann Peter Hoffmann is William Kingsford Professor of History at McGill University and author of Stauffenberg: A Family History, 1905-1944, and The History of the German Resistance, 1933-1945. Books by Peter Hoffmann Behind Valkyrie German Resistance to Hitler, Documents edited and translated by Peter Hoffmann Stauffenberg A Family History, 1905-1944, Third Edition by (author) Peter Hoffmann History of the German Resistance, 1933-1945 by (author) Peter Hoffmann The History of the German Resistance, 1933-1945 by (author) Peter Hoffmann