Where in Duluth?

On the railroad tracks.

Pretty good guess. But we'll need more specifics in order to award the Grand Prize.

I think we have a double solve on Facebook. Tara Sieve wrote: "I thought it was in West Duluth by Loll. There's an old train car stranded out there."

Then Jessica Chatterton came along with more specific directions and visual evidence. 

Yep, those are correct. 61st and Waseca, across the street from the Loll headquarters.

For the record, my wife Sue knew where this was immediately. It was only my procrastination, and not remembering my login password 'til I looked it up at home, that prevented her from winning all the Correct Guess Glory.