Charles Amory Beach wrote the Air Service Boys series for the Stratmeyer syndicate from 1918 to 1920. There are six books in the series including Air service boys over the enemy's lines: or, The German spy's secret, Air Service Boys Over the Rhine Or Fighting Above the Clouds, Air service boys flying for France, or, The young heroes of the Lafayette, Air service boys flying for victory, or, Bombing the last German stronghold, Air Service Boys in the Big Battle Or, Silencing the Big Guns, and Air service boys over the Atlantic: or, The longest flight on record.