The early 1900's saw a huge fascination with the newly possible airplane. L. Frank Baum wasn't one to let a new scientific discovery on such a scale slip past him, and wrote 2 young adult novels based on the technology. These were published under his pseudonym of Edith Van Dyne. A third story was planned, but never published.
These books fall in line with other flying novels published by Reilly & Britton, such as the Airship Boys series, the Boy Scouts of the Air series, and the Aeroplane Boys series. Baum added a different element by making his pilot a girl, a reflection of the female pilots who were well known at the time.