I visited the Marquette area about once a year from 1979-2000, I enjoyed the trip from my former home in Lake Orion. I did a little Guerrilla Gardening there even before I was aware of the concept. From my home in southern Michigan, I sometimes had volunteer trees pop up in my yard. I dug them up and planted them elsewhere.
I distinctly remember planting a Black Walnut near the mouth of Roxbury Creek (into Whitefish Bay), a Boxelder in Luce County (near Crisp Point Lighthouse), and a Silver Maple along the road from Marquette to Big Bay (County Road 550, I think).
I made it a ritual of mine to swim in Lake Superior every year. Of course, you know that there are two types of water in Lake Superior: frozen ice and melted ice! The UP was a great place for photographing lighthouses and waterfalls. If I could find Thimbleberries, I'd pick them and eat them immediately! Oh, yes, I also tried a cudighi in 1979, and I've been hooked ever since! Alas, my last visit was in August 2001....
I don't know when I'll be back, but if you could plant more Thimbleberries, I would be grateful!