The first link Toni posted has 2 for $9.95. It says wax coated paper but I wonder if you couldn't spray it with a clear matt lacquer to make it totally weather proof?
I am a strong believer in the simple fact is that what matters in this life is how we treat others. I think that's what living is all about. Not what I've done in my life but how I've treated others. ~~ Sharon Brown