This letter from Myron Avery to C.S. (Clint) Jackson, May 13, 1932, provides very useful insights into the difficulties the Appalachian Trail Conference had in scouting out a route for the trail west of the New River in the early 1930s. In the letter, Avery describes his efforts to find a route along Iron Mountain in the Houndshell Gap area between Flat Ridge and Sugar Grove. Even with the help of a local resident, Avery struggled to find a route that suited his needs.

The trail guide for this section makes it clear just how difficult the task was, because in the early 1930s, this region was still largely unmapped by the U.S. Geological Survey. Avery was relying on a military map created by Henry Lindenkohl in 1864. Iron Mountain and the surrounding area had been incorporated into the Unaka National Forest (now the Jefferson National Forest) in 1920, and Clint Jackson was the supervisor of the forest between the New River and Damascus, Virginia. In that capacity, he was instrumental in helping Avery find a route for the trail through the Unaka Forest and then helped to maintain the trail in this region for more than a decade.