Found this on the Narrow Gauge Discussion Forum: Obituary for Allen J. Brewster, whose drawings of narrow gauge equipment often appeared in Model Railroader magazine, and also tales of he and his father's trips to visit the narrow gauge. He was the son of a Santa Fe engineer who had traded his California seniority with another in Gallup, NM to be closer to the D&RGW narrow gauge operations.

http://www.ngdiscussion.net/cgi-bin/NGDF.pl?read=29167
ryarger@rypn.org