"The Young Engineers in Arizona; or, Laying Tracks on the Man-killer Quicksand" is a book in the "Young Engineers" series authored by H. Irving Hancock, an American writer known for his adventure and juvenile fiction. The book was published in the early 20th century and targeted a young audience.In this particular installment of the series, the young engineers find themselves in Arizona, facing the challenge of laying tracks in an area with hazardous quicksand, known as the "Man-killer Quicksand." The narrative likely includes thrilling adventures, problem-solving, and the characters' endeavors to overcome the dangers posed by the quicksand while completing their engineering project.H. Irving Hancock's "Young Engineers" series typically engaged young readers with tales of adventure, technical knowledge, and problem-solving skills, often incorporating elements of danger and excitement within a setting that highlights engineering and construction challenges.