Cibola National Forest Sandía Crest Trailhead. Definitive references remain elusive, but we know the "Crest Loop" includes this trailhead and that part of the loop is called the "CCC Trail". CCC is the New Deal Civilian Conservation Corps[2,3]. And we also know that a CCC-built limestone cabin is on this loop, on Trails #130 and #94 which both start here (see sign).

1. Sandia Crest Trails & Trailheads, US Forest Service website, accessed 29 November 2018.
2. Crest Trail 130 - North & South, US Forest Service website, accessed 29 November 2018.
3. The Civilian Conservation Corps, Living New Deal website, accessed 29 November 2018.
4. John C. Paige, The Civilian Conservation Corps and the National Park Service, 1933-1942: An Administrative History, National Park Service (1985), especially Chapter 5: "The CCC was Roosevelt's most popular New Deal program. Over the course of nine years, the boys of the CCC planted close to 3 billion trees, and built more than 13,000 miles of trails."
5. Gray Brechin, A Firebreak Runs Through It, Living New Deal Newsletter, 27 November 2018. A timely article about the CCC and California wildfires.