I stumbled upon an interesting Duluth factoid, courtesy of the Futility Closet:

In 1871 the House of Representatives was considering subsidizing railroads to serve the Midwest, including tiny Duluth, Minn. Kentucky representative J. Proctor Knott rose, produced a bucket of sarcasm…

Yet, sir, had it not been for this map, kindly furnished me by the Legislature of Minnesota, I might have gone down to my obscure and humble grave in an agony of despair, because I could nowhere find Duluth. Had such been my melancholy fate, I have no doubt that with the last feeble pulsation of my breaking heart, with the last faint exhalation of my fleeting breath I should have whispered, ‘Where is Duluth?’

Little did he know that Duluth was destined for greatness thanks in part to its railroad. Full speech here (along with annotated laugh track): The Kentucky Anthology