Thank you - if the term is regional - I wonder if a local Colorado history museum might have some kind of information about the rise of the term.
Something else I was wondering was whether or not the term had been coined in some Western movie or other - Western movies and/or TV shows are STILL very popular in this region.
The City of Dodge City, Kansas, just had a special 50th anniversary celebration for the long-running Western series GUNSMOKE, and one of the 'little known facts' that came out was that the phrase 'Get out of Dodge' was specifically coined during an EARLY episode of that series - as far back as RADIO days!
Sort of like 'meathead' gained national recognition as a term to denote someone who was 'dead from the neck up' because of the constant references by ARCHIE BUNKER to the term during ALL IN THE FAMILY.
AT any rate - thanks for the input - Sincerely, Celestina