βItβs a nice assortment of natural and historic sites, the well known and the not so well known. Many people know about the iconic parks, but [these park stamps] show the diversity.β
βItβs a nice assortment of natural and historic sites, the well known and the not so well known. Many people know about the iconic parks, but [these park stamps] show the diversity.β
β National Park Service spokeswoman Kathy Kupper