A little perspective, this parade and displays of patriotism like it initiated a period of really scary times in Duluth if you happened to be an immigrant.  A little over a month later, (Aug. 18), local national guardsmen (perhaps some in these very pictures) attacked and destroyed the local IWW HQ at 530 W. First St. (with the private approval of William Prince, the former mayor and new commissioner of public safety).  Two days after that, there were raids on boarding houses where 69 Finns were arrested because they couldn't immediately provide their draft registration papers. 28 of those turned out to be too old to register anyway. The rest spent their time in jail, forced to refrain from discussing the draft with visitors or speak anything but English. Over the next year, these sorts of raids became commonplace around our region, and speaking out about peace could get you arrested.

If you're looking up Fifth Avenue West, to the left is the Depot and so yes, I'd assume this was part of the Depot complex back when trains were commonplace and not tourist fun.