""In this book I have endeavored to present the true facts, as far as they are known, concerning German Sabotage in the United States during the period between the outbreak of the World War and the entrance of the United States into the war.
I have concentrated principally on the Black Tom and Kingsland cases, as they were the most devastating acts committed and the only ones, with the exception of an explosion in Tacoma Harbor, in which any attempt has been made to prove German complicity and t. ""In this book I have endeavored to present the true facts, as far as they are known, concerning German Sabotage in the United States during the period between the outbreak of the World War and the entrance of the United States into the war