I use a good grade of muslin cut to whatever size I need to give the information about the quilt. I use a Pigma pen or a fine point Sharpie to hand write the information because I think that is more personal, sort of like having my mother's recipes written in her own hand. I frequently sash the muslin with fabric from the face of the quilt.
Always put a label on your quilt with your name, the name of the quilter if there is one, the date and the location and if you want, the name of the recipient. Someone in the future will want to know as much about the quilt you have made as they can find out and you are the best one to tell them. froggyintexas