You can see the February 1922 QST article with details about 1AAW (originally copied as 1AAY) and the entire process
here.
It's a bit confusing - only a few of the stations that made it into the "finals" seem to have made the list of those actually heard.
I was amazed to see one of the finalists, 2EL, was from my hometown of Freeport NY and looks like his station was on a farmhouse on a block that eventually became houses where my high school girlfriend lived. Never knew any of this when I lived there!
73 John K3TN