My information came from my great uncle and aunt, Tom and Myrtle Hall, parents of Earl B. Hall. This is the information they were given upon Earl's death. Of course, he was first reported missing, then declared dead. It was repeated to me by Uncle Tom and my dad. He was awarded the air metal for his actions, and later a destroyer escort was named after him. It was christined on March 1, 1944. I have found online pictures of the christining, and I recognized my aunt and cousin in a couple of the pictures. If Earl's two sisters are alive, I have not been able to find them, but upon their parents' death (last one in 1985), they had heard nothing more than what I have stated.
It might be of interest to you to know that many former crew members of the USS Earl B. Hall have a reunion every year, and they are extremely interested in Earl's early life, his heroism, etc. This year, in September, they will be coming to his hometown, Dawson Springs, KY, to honor his memory. Although the town is a tiny dot on the map, it is important to them.
I appreciate your note and will try to find the books you mentioned. Please do let me know if you find anything further.