Nicholson advised the United States Forest Service in its initial and subsequent land purchases in what is now the Chattooga River Ranger District of the Chattahoochee National Forest. He and Arthur Woody are considered to be the two most important early figures in the history of the Chattahoochee National Forest.
Nicholson provided guidance to the United States Forest Service regarding land acquisitions for what is now the Chattooga River Ranger District within the Chattahoochee National Forest. He and Arthur Woody are recognized as being among the most significant early figures in the development of the Chattahoochee National Forest.