"He had the only monoplane. It's a high-wing monoplane, and it has a big mast in the middle. It's obviously his plane."
"And it's in the air, so it's obviously flying," he told FoxNews.com.
Other experts remained skeptical of Brown's claims: Peter Jakab, associate director of curatorial affairs for the Smithsonian Museum, said the 1906 photograph was examined thoroughly long ago.
"I see a lot of blurriness. I don't see a lot of airplanes," he joked. He argues that the legacy of Orville and Wilbur's plane is more important anyway.
"It was able to evolve into something we have today. And that's its real powerful significance -- in addition to being the first to fly," Jakab told FoxNews.com. Crouch went so far as to call Whitehead a pretender, noting that people he worked with in later years didn't believe he had flown.
"Up until now, historians said he was a pretender, a fake and a fraud. The truth is quite the opposite," Brown told FoxNews.com.
The German Interior minister on Tuesday awarded €9.5 million for a new museum dedicated to Whitehead, Brown noted. But first or second, that investment might be taking things too far -- even for Brown.