The Flying Machine Boys on Duty; Or, The Clue Above the Clouds

"The Flying Machine Boys on Duty; Or, The Clue Above the Clouds" by Frank Walton is an action-packed adventure that throws young aviators James, Ben, and Carl into a thrilling chase after bank robbers. The story begins with a high-stakes aerial encounter, as one of the boys skillfully dodges a mysterious pursuer above New York Bay, after which they get involved in a police case to track down two dangerous criminals who committed a bank robbery and murder. The hunt takes them west to the Pacific coast, where they face the perils of both flight and the hidden threats of the criminals' partners. With danger around every turn, a journey begins full of bravery and determination, as they use their flying machines to bring the criminals to justice.