Air Service Boys over the Enemy's Lines; or, the German Spy's Secret

Charles Amory Beach was a house pseudonym used to publish a number of works for young boys at the beginning of the twentieth century. Works published using this name include: The Air Service Boys Flying for France (1918), The Air Service Boys over the Enemy's Lines (1918), The Air Service Boys in the Big Battle, or, Silencing the Big Guns (1919), The Air Service Boys over the Rhine (1919), The Air Service Boys Flying for Victory (1919) and The Air Service Boys over the Atlantic, or, The Longest Flight on Record (1920).