Its in the poem: Reverse a lynching by Ansel Elkins. I doubt if Sullivan knew in which city his photo was taken.
About the author
Harry is a ferociously good natured eccentric in Duluth Minnesota who detests traitors dressed up as Uncle Sam. You can find somewhat better edited writings of his at the Duluth Reader "contributors." page. The URL is:https://duluthreader.com/contributors/h/84/284-harry-welty