The Humane Society regularly sends out address labels to its members. Joining them is free and anyone can do it. While they do ask for donations fairly regularly, it is not required to join their free mailing list. They will also send you new address labels once or twice a year after you have joined. As usual, you can expect this sample to arrive within 4-8 weeks, if not longer. The sample will last as long as the supplies do.
If you like address labels, why not get some Christmas Seals while you’re at it. Check out this freebie being offered up by the American Lung Association.
Those of you who are interested can get started right here.