The laws vary by state. In states like TN the records are permanantly sealed, regardless of how old they are. In other states, like VA, you can get the records after a certain amount of time. I would contact the institution your great aunt and great grandmother were in, see if they have records and if you can get copies. You do usually have to pay for the records. We'll have to pay $72 for my great great aunt's and I'm expecting around $120 for my great great grandmother's. I think it will be worth it, though.