Doyle Aero Corp
Two brothers named Wilson and Harvey Doyle were 1925 graduates of Harvard and Yale respectively and moved to Portsmouth, Ohio, where William Burke of the Vulcan Last Company. Burke backed their plan to build a two-place, tandem, open-cockpit parasol sportplane and the Vulcan Aircraft Division began.
The result was the Vulcan “American Moth.” The plane was a hit, but the relationship among the principles was deteriorating and the Doyle brothers left to start their own Doyle Aircraft Company in Baltimore in 1929. They produced fourteen Doyle Orioles which were similar to the Moth before bankruptcy ended the effort.