Brother born to mother in Seattle Washington in 1942

Do you have any information at all on him was he or you put up for adoption when younger, how did you become separated just trying to get info to help you. Not trying to be snoopy.

This child would have born to my mother and given up at birth. Before I was born

Do you have any information on the brother at all,like what hospital he was born at or other relations that might have any information to tap in to?