Name: Richard West Sellars

Age: 76

Vocation: Retired National Park Service historian

Hometown: Santa Fe, New Mexico

Competitive streak: In the early 1980s, Sellars began a friendly competition to visit the most national park sites. His friends dropped out years ago, but Sellars is still at it. He's been to about 380 of the National Park Service's 397 parks, historic sites, monuments, memorials, and battlefields, and is trying to cross the rest off his list.