In 1929-30, as the Depression was getting underway, the Soo Line kept the workers at Shoreham Shops in Minneapolis working by constructing three class N-20 4-8-2 Mountain-type locomotives, numbers 4018-4020. They remain the only locomotives ever built in Minneapolis. Sadly, none of the Soo N-20s was preserved; in fact, to my knowledge, this headlight from #4020 is all that remains of these grand locomotives. The headlight of Soo 4020 is preserved at the Lake Superior Railroad Museum in Duluth, MN.