He was the pilot and the navigator. She was merely a passenger. Officially, she was called “captain” but It was purely a stunt.
The flight/stunt was promoted by Admiral Byrd, Putnam (Amelia’s future husband) and a wealthy socialites family from Boston. It’s an interesting story.
Wilmer set another long distance record, flying nonstop from NYC to Havana also with a woman onboard.
His life is pretty interesting. His pilots license is numbered in the hundreds and was signed by Wilbur Wright himself. Pretty cool. Check out those links I posted.