The activist Bob Marshall died at the age of 38. Here is all you want to know, and more!
Biography - A Short Wiki
Wilderness activist, conservationist and writer remembered for founding The Wilderness Society in 1935. Some of his best known works include the 1930 essay “The Problem of the Wilderness” and the 1933 book Arctic Village.
He was one of four children born to Louis and Florence Marshall. His brother George was also a notable conservationist.