For more than three decades, Bill Burke '84 has worked for the National Park Service, serving as a park ranger at historic sites such as Independence Hall in Philadelphia, Pa., as well as parks in New Jersey, Virginia, and Wyoming. Most of his career has been spent as the cultural resources program manager for the Cape Cod National Seashore, where a local reporter dubbed him the "Keeper of Time." In this episode, Burke discusses life as a field historian, his favorite items in the National Seashore's collections, and the PC faculty who influenced him the most.