Iso Sibling Birth Mothers Name Is Donna Rae Cole Dob 3-3-41

I just found out that I have an adopted sibling. My mother is Donna Rae Cole and her date of birth is March 3, 1941. She grew up in Lebanon Junction, Kentucky. I think that she gave birth in Louisville, Kentucky at the Salvation Army organization for unwed mothers. I was told that she was around the age of 25 when she had this child, so that would make the child born sometime in the mid sixties, but I have no idea of the date of birth. My mom had red hair and brown eyes. I realize that this is not much information, but I would appreciate any help that you could provide. Thanks and have a great evening. Amy