Early construction on the Rio Grande in the Utah desert and across Soldier Summit. General Palmer’s Other Narrow Gauge by Robert A. LeMassena. Mexican National narrow gauge. The Denver Post’s Frontier Days Special by Richard Kreck and Kenton Forrest and The Greatest Train by Alexis McKinney. Personal reminiscences of the Frontier Days Train. Union Paci.c’s Articulated Steam Power by R. H. Kindig and R. C. Farewell. Over 300 photographs.