The Patriotic Order Sons of America is an American patriotic fraternal organization that traces its origins to the anti-alien riots of the 1840s. Founded in 1847 in Philadelphia,[1] the P.O.S. of A. once had "camps" (chapters) in well over 20 states. At its peak, there were more than 800 Camps in Pennsylvania alone. Today, the society maintains a presence only in Pennsylvania, where it has 14 camps. The national headquarters are in Valley Forge, Pennsylvania.