Fighting Germany's Spies

Barry Wynn; Or, The Adventures of a Page Boy in the United States Congress

The German Spy in America The Secret Plotting of German Spies in the United States and the Inside Story of the Sinking of the Lusitania

Germany's Fighting Machine Her Army, her Navy, her Air-ships and Why She Arrayed Them Against the Allied Powers of Europe

The Boy Spies of Philadelphia The Story of How the Young Spies Helped the Continental Army at Valley Forge

Food Guide for War Service at Home Prepared under the direction of the United States Food Administration in co-operation with the United States Department of Agriculture and the Bureau of Education, with a preface by Herbert Hoover