Yes, we should really label our quilts so future generations will know all about when and where the heirloom was created. Really though, not all quilts are made to survive that long. I will label a quilt if I am giving it away and know the recipient will take great care of it. I label quilts to hang in a show. Other than that I am realistic. The quilts on the bed are wearing thin and won't make it for ever and ever. Baby quilts are made to be used so we want them to be well loved. So here are some options based on who receives the quilt and how they use it.
1. Nothing if you know it is going to be washed regularly and may end up on sand at the beach.
2. Write directly on a light colour backing with a marker. Pigma pens are permanent and have archival ink. However, this type of label will upset most quilters greatly so beware of who you admit it to.
3. Prepared labels. Sometimes you can find premade labels that you add your name to with a marker.
4. There are a few books with quilt label transfers.
5. Print onto prepared fabric sheets using an inkjet printer. I use a simple publishing program like PrintMaster. Any software for making cards will work. If you need help there are lots of computer kids who would help you through it. I use a two fold or four fold card to make labels. That way I use the whole fabric sheet at once and get either 2 or 4 labels at a time.
You can buy CDs of printable labels. I haven't tried them yet but this is what to look for in your quilt shop.