Here is another link that tells how the premiere got held there, the turnout and other stuff.
http://www.reeldiaries.com/moviehouse/articles/dodgecity.htm
All: I recommend the link aft_lizard provided at #13. In addition to the letter quoted there is a good one regarding Joachim von Ribbentrop and his days as a liquor salesman. Before he learned that Jews were a threat to his way of life.