I found from the Islands Sounder that the plane in the breathtaking fly-by I saw at Orcas Island airport was a Douglas AD-1 Skyraider, piloted by Alan Anders. Not exactly a WWII warbird as it debuted at the end of the war, but close.
The plane itself belongs to Anders’s father, Bill Anders, who is an Orcas Island resident and one of the Apollo 8 astronauts. Pretty cool.