Okay, so you’ve visited a U.S. national park (or five), gazed out over the majestic views, and probably taken way too many blurry photos of squirrels. But now what? Enter the great tradition of ...

In the cool quiet of the shop, Baxter merrily surveyed the park’s available stamps: one for Eisenhower (a recent addition to the park system), another for the National Cherry Blossom Festival and ...