 My name is Jim Gabbert. I'm a historian with the National Register of Historic Places program at the National Park Service. What is the National Register of Historic Places? That's a really good question. The federal government created the National Historic Preservation Act in 1966, and the centerpiece of that act was the National Register of Historic Places. In essence, it's a federal planning tool, but in practicality it's the official list of properties worthy of preservation, a list of properties that people at the local, at the state, and at the national level value in some way. As of today, this is 2015, there are approximately 91,000 give or take 100 listings in the National Register. By listing we mean individual documents that list properties. So that 91,000 listings actually includes up to 1.8 million building site structures, objects, or districts. So a nomination may include a single building or it may include a large historic district composed of hundreds if not thousands of building sites and structures. Each year the National Park Service receives on average 1,200 nominations from the states, tribes, and federal governments. Of those, the vast majority of them eventually get listed. So I would say that per year we're averaging around 1,200 new listings in the National Register.