^ (2013). A Walk Around the Horizon: Discovering New Mexico's Mountains of the Four DirectionsECampus. ISBN 9780826353641 (revised Feb 2023)
^Harmer, Tom (2015). A Walk Around the Horizon: Discovering New Mexico's Mountains of the Four Directions, Univ of New Mexico Pr. BiggerBooks. ISBN 9780826353641 (revised Jun 2022)