Ok I am a newbie here and this may have come up before, but I have a question about fabric. My grandmother left me all of her quilting supplies, fabric, notions, you name it. While going through the fabric and quilt tops given to me I found several top and blocks that appear to have been made by my great grandmother. She has been gone for about 40 years so i am going to say that these tops and squares are about 60 or more years old. My question now... how old is too old for fabric to be quilted? I don't want to ruin the pieces, tops or blocks so I thought I would see what you talented and gifted ladies have to say. thanks in advance for your help.