Sr. Luiz -

Not to diminish Msr. Dumot's accomplishment, but his flight occurred in 1906, seven years after Hr. Whitehead's. The Whitehead planes were self powered (no catapault) on wheels. The flights were all witnessed by many, and he once flew out over Long Island Sound for quite a distance before becoming concerned about gusty winds and returning to shore. His 1902 plane was even amphibious.

There were a surprising number of people all over the world working on heavier-than-air flight at about the same time... kinda suspicious... alien technology??