Burwell, David Gates (2/1/2017)
Here is his obituary in the Washington Post.
David Burwell, the co-founder and first president of the Rails-to-Trails Conservancy, a Washington-based organization that has led nationwide efforts to convert thousands of miles of unused railroad corridors to trails and parklands, died Feb. 1 at his home in Bethesda, Md. He was 69.