For some interesting background on all this, have a look the book Something in the Air, by Marc Fisher. You'll find my review of the book here.
Discussions of the book CROSLEY: Two Brothers and a Business Empire that Transformed the Nation, as well as the life of Powel Crosley, Jr., Crosley cars, radios, broadcasting, WLW, aircraft, and related topics. Check here often for new information uncovered since the book was published. This is the Official Crosley Blog, maintained by Crosley lead author and historian Michael A. Banks.