The River Motor Boat Boys on the Amazon; Or, The Secret of Cloud Island

"The River Motor Boat Boys on the Amazon; Or, The Secret of Cloud Island" by Harry Gordon is an adventure story about four orphaned boys, Clay, Alex, Case, and Julian, kicking off an exciting expedition on the Amazon River in their motorboat, the "Rambler". Determined to aid their sick friend Jule's recovery, the boys pool their money to fund the trip. Their adventure quickly takes a suspenseful turn when Jule goes missing, and their hard-earned money disappears. As the boys face the unknown peril, their journey turns into a thrilling quest to uncover secrets and combat the dangers of the Amazon, testing the strength of their friendship and their ability to overcome challenges.