Robert Marshall was an American forester, conservationist, and writer, known for his influential work in the field of wilderness preservation. He played a significant role in the establishment of the Wilderness Society in 1935, advocating for the protection of natural landscapes in the United States. His writings emphasized the importance of preserving wild areas for future generations. Marshall was also a skilled mountaineer and explored many remote regions, contributing to the understanding of Alaska's wilderness. His book, "The People's Forests," highlighted the need for sustainable forest management and the value of public lands. Marshall's legacy continues to inspire environmentalists today.