Somewhere in America, between the Appalachians and the Rocky Mountains, is a team named the "Thirty-Niners". What is the name of the sponsoring organization of this team and what is the significance of the team's name? Hints: It has nothing to do with historical dates. This trivia is in the Entertainment, and not Sports, forum for a reason. Another hint: It's unlikely, though not impossible, that anyone under the age of, oh, 55, will get this one.