Quilt labels can provide information about the quilt, quilt maker, pattern, quilter and even care instructions. A basic format follows.
Quilt Maker's Name
City, State, Country
Month and Year of Creation
You could also list the quilter's name or company if you sent your quilt out for quilting. Care instructions would be helpful for those that are not familiar how to launder quilts. A lot of quilters include information for the recipient, i.e., "Happy Birthday Mom," or "To Celebrate Your Nuptials" on a wedding quilt. If you're making a baby quilt, you could add the baby's name, birth date, weight, length, etc.