Thank you, Todd and Benson!
That sounds like the right boat, and the Minneapolis destination fits with its location. The mast step and support were a home-made job, added later; the mast and spars may have been homemade as well, but resemble OT's parts quite well, per another attendee at the show. I didn't see any red paint under the blue, so it probably was re-canvassed along its way, though not recently.
The sons of the recently deceased owner brought the canoe to the Wisconsin Canoe Heritage Museum's season opening boat show event this weekend, hoping to not bring it back to the Twin Cities with them. They remember playing in and with it when they were kids. They had some interest expressed, but no real nibbles on taking it away. It's been donated to the Museum, and will be restored by staff and volunteers there, eventually.