Artists find smooth sailing in public project to celebrate 150th anniversary of Detroit Lakes With materials donated and fabricated by BTD Manufacturing, a set of 80 artists signed up to design the sails, including artists from the Dakotas and Minnesota and as far away as Smyrna, Ga. Written By: Ethan Mickelson | × Hans and Mary Beth Gilsdorf, co-founders of the 150 Sails Up project, pose for a photo surrounded by some of the finished sails at Kent Freeman Hockey Arena in Detroit Lakes, Minn. Special to The Forum DETROIT LAKES, Minn. — Together for the first and only time before they metaphorically set sail into the relaxed Minnesota lake town, a reception this week will show off the 150 metal sail sculptures that were designed by artists to celebrate the city's 150th anniversary.