I am a Hut Overseer on the AT as it winds it's way through the Shenandoah National Park. At the present time PATC is replacing the old "drop privies" with moldering privies. I am interested in buying a quantity of the "No pee in Privy" signs that I have seen in New Hampshire and other locales along the Trail. Can anyone provide me with a source where I could buy the sign?