Not sure about SC, but up in NC in the early 70s hospitals were still listing births and hospital discharges in the locals newspapers. If the baby was adopted there is a chance the birth wasn't listed, however, there may have been a notice of Mom's discharge from the hospital. Of course there will probably be more than one for the time frame, and it's a long shot, but can't hurt to try. (HIPAA laws today don't allow these notices.) Also, if there was an adoption, even back in 1971 chances are pretty good that SC, same as NC, won't allow the info to be released by doctors, hospitals or other agencies without jumping thru hoops. Best wishes with your search.